{"product_id":"prosaunas-alder-1x5-t-g-sts4-wood741-1","title":"ProSaunas ALDER 1X5 (15mm x 120mm) T\u0026G STS4 | Sauna Wood, Tongue \u0026 Groove, STS4 Profile, Nickel-Gap, Wall Material","description":"\u003cstyle\u003e\n    :root {\n        --navy: #09195b;\n        --white: #ffffff;\n        --grey: rgba(97, 97, 97, 1);\n        --light-grey: #f5f5f5;\n        --border: #e0e0e0;\n        --accent: #c8a96e;\n    }\n\n    body {\n        font-family: 'DM Sans', sans-serif;\n    }\n\n    .prosaunas-logo {\n        \/* \/* font-family: 'Playfair Display', serif; *\/\n        *\/ color: var(--white);\n        font-size: 1.5rem;\n        font-weight: 700;\n        letter-spacing: 0.04em;\n        text-decoration: none;\n    }\n\n    .prosaunas-logo span {\n        color: var(--accent);\n    }\n\n    \/* nav a {\n    color: rgba(255, 255, 255, 0.75);\n    text-decoration: none;\n    font-size: 0.85rem;\n    font-weight: 500;\n    margin-left: 28px;\n    letter-spacing: 0.03em;\n    transition: color 0.2s;\n  }\n\n  nav a:hover {\n    color: var(--white);\n  } *\/\n\n    \/* ── BREADCRUMB ── *\/\n    .prosaunas-breadcrumb {\n        background: var(--light-grey);\n        padding: 12px 48px;\n        font-size: 0.8rem;\n        color: var(--grey);\n    }\n\n    .prosaunas-breadcrumb a {\n        color: var(--navy);\n        text-decoration: none;\n    }\n\n    .prosaunas-breadcrumb a:hover {\n        text-decoration: underline;\n    }\n\n    .prosaunas-breadcrumb span {\n        margin: 0 6px;\n    }\n\n    \/* ── HERO BANNER ── *\/\n    .prosaunas-hero-banner {\n        position: relative;\n        width: 100%;\n        height: 300px;\n        overflow: hidden;\n        border-radius: 20px;\n    }\n\n    .prosaunas-hero-banner img {\n        width: 100%;\n        height: 100%;\n        object-fit: cover;\n        object-position: center;\n        display: block;\n    }\n\n    .prosaunas-hero-overlay {\n        position: absolute;\n        inset: 0;\n        background: linear-gradient(to right, rgba(9, 25, 91, 0.85) 42%, rgba(9, 25, 91, 0.15) 100%);\n        display: flex;\n        align-items: center;\n        padding: 0 72px;\n    }\n\n    .prosaunas-hero-text {\n        max-width: 520px;\n    }\n\n    .prosaunas-badge {\n        display: inline-block;\n        background: var(--accent);\n        color: var(--navy);\n        font-size: 1.3rem;\n        font-weight: 700;\n        letter-spacing: 0.12em;\n        text-transform: uppercase;\n        padding: 5px 12px;\n        border-radius: 2px;\n        margin-bottom: 16px;\n    }\n\n    .prosaunas-hero-text h1 {\n        \/* font-family: 'Playfair Display', serif; *\/\n        font-size: 3.5rem;\n        \/* font-size: 2.6rem; *\/\n        font-weight: 700;\n        color: var(--white);\n        line-height: 1.15;\n        margin-bottom: 10px;\n    }\n\n    .prosaunas-hero-text .prosaunas-subtitle {\n        color: rgba(255, 255, 255, 0.75);\n        font-size: 1.5rem;\n        margin-bottom: 6px;\n    }\n\n    .prosaunas-hero-text .prosaunas-sku {\n        color: rgba(255, 255, 255, 0.5);\n        font-size: 1.5rem;\n    }\n\n    \/* ── MAIN CONTENT ── *\/\n    .prosaunas-content-wrap {\n        max-width: 1100px;\n        margin: 0 auto;\n        padding: 60px 0px;\n    }\n\n    \/* ── COMPONENT BANNER ── *\/\n    .prosaunas-component-banner {\n        background: #eef1f9;\n        border-left: 4px solid var(--navy);\n        padding: 16px 20px;\n        border-radius: 20px;\n        margin-bottom: 56px;\n    }\n\n    .prosaunas-component-banner p {\n        font-size: 1.5rem;\n        color: var(--navy);\n        font-weight: 500;\n        line-height: 1.6;\n    }\n\n    .prosaunas-component-banner strong {\n        font-weight: 700;\n    }\n\n    \/* ── INTRO: image left, text right ── *\/\n    .prosaunas-intro-block {\n        display: grid;\n        grid-template-columns: 1fr 1fr;\n        gap: 52px;\n        align-items: center;\n        margin-bottom: 20px;\n    }\n\n    .prosaunas-intro-block img {\n        width: 100%;\n        border-radius: 20px;\n        display: block;\n        aspect-ratio: 4\/3;\n        object-fit: cover;\n    }\n\n    .prosaunas-intro-text h2 {\n        \/* font-family: 'Playfair Display', serif; *\/\n        font-size: 3rem;\n        color: var(--navy);\n        margin-bottom: 16px;\n    }\n\n    .prosaunas-intro-text p {\n        font-size: 1.5rem;\n        color: #444;\n        line-height: 1.8;\n        margin-bottom: 14px;\n    }\n\n    \/* Spec chips *\/\n    .prosaunas-spec-chips {\n        display: flex;\n        flex-wrap: wrap;\n        gap: 8px;\n        margin-top: 20px;\n        margin-bottom: 50px;\n    }\n\n    .prosaunas-chip {\n        background: var(--light-grey);\n        border: 1px solid var(--border);\n        border-radius: 20px;\n        padding: 6px 14px;\n        font-size: 1.5rem;\n        color: #333;\n    }\n\n    .prosaunas-chip strong {\n        color: var(--navy);\n        font-weight: 600;\n    }\n\n    \/* ── SECTION TITLE ── *\/\n    .prosaunas-section-title {\n        \/* font-family: 'Playfair Display', serif; *\/\n        font-size: 3.5rem;\n        color: var(--navy);\n        margin-bottom: 28px;\n        padding-bottom: 10px;\n        border-bottom: 2px solid var(--border);\n    }\n\n    \/* ── FEATURES: table + side images ── *\/\n    .prosaunas-features-block {\n        display: grid;\n        grid-template-columns: 1fr 340px;\n        gap: 48px;\n        align-items: start;\n        margin-bottom: 72px;\n    }\n\n    .prosaunas-features-table {\n        width: 100%;\n        border-collapse: collapse;\n        font-size: 0.88rem;\n    }\n\n    .prosaunas-features-table thead tr {\n        background: var(--navy);\n        color: var(--white);\n    }\n\n    .prosaunas-features-table thead th {\n        padding: 13px 18px;\n        text-align: left;\n        font-weight: 600;\n        letter-spacing: 0.06em;\n        font-size: 1.5rem;\n        text-transform: uppercase;\n    }\n\n    .prosaunas-features-table thead th:first-child {\n        width: 36%;\n    }\n\n    .prosaunas-features-table tbody tr {\n        border-bottom: 1px solid var(--border);\n        font-size: 1.5rem;\n    }\n\n    .prosaunas-features-table tbody tr:nth-child(even) {\n        background: var(--light-grey);\n    }\n\n    .prosaunas-features-table tbody td {\n        padding: 13px 18px;\n        vertical-align: top;\n        line-height: 1.6;\n    }\n\n    .prosaunas-features-table tbody td:first-child {\n        font-weight: 600;\n        color: var(--navy);\n    }\n\n    .prosaunas-benefit-icon {\n        color: var(--accent);\n        margin-right: 4px;\n    }\n\n    .prosaunas-features-side {\n        display: flex;\n        flex-direction: column;\n        gap: 14px;\n        position: sticky;\n        top: 24px;\n    }\n\n    .prosaunas-features-side img {\n        width: 100%;\n        border-radius: 4px;\n        display: block;\n        object-fit: cover;\n    }\n\n    .prosaunas-features-side img:first-child {\n        aspect-ratio: 3\/2;\n    }\n\n    .prosaunas-features-side img:last-child {\n        aspect-ratio: 4\/3;\n    }\n\n    \/* ── WHY HEMLOCK ── *\/\n    .prosaunas-why-section {\n        background: var(--navy);\n        padding: 60px 48px;\n        margin-bottom: 72px;\n        border-radius: 20px;\n    }\n\n    .prosaunas-why-section h2 {\n        \/* font-family: 'Playfair Display', serif; *\/\n        color: var(--white);\n        font-size: 3rem;\n        margin-bottom: 8px;\n        text-align: center;\n    }\n\n    .prosaunas-why-section .prosaunas-sub {\n        color: rgba(255, 255, 255, 0.6);\n        font-size: 1.5rem;\n        text-align: center;\n        margin-bottom: 40px;\n    }\n\n    .prosaunas-why-cards {\n        display: grid;\n        grid-template-columns: repeat(3, 1fr);\n        gap: 22px;\n    }\n\n    .prosaunas-why-card {\n        background: rgba(255, 255, 255, 0.07);\n        border: 1px solid rgba(255, 255, 255, 0.13);\n        border-radius: 20px;\n        padding: 28px 22px;\n    }\n\n    .prosaunas-why-card .prosaunas-icon {\n        font-size: 3rem;\n        margin-bottom: 12px;\n    }\n\n    .prosaunas-why-card h3 {\n        \/* font-family: 'Playfair Display', serif; *\/\n        color: var(--white);\n        font-size: 2.5rem;\n        margin-bottom: 10px;\n    }\n\n    .prosaunas-why-card p {\n        color: rgba(255, 255, 255, 0.68);\n        font-size: 1.5rem;\n        line-height: 1.65;\n    }\n\n    \/* ── SPECS + IMAGE ── *\/\n    .prosaunas-specs-block {\n        display: grid;\n        grid-template-columns: 1fr 1fr;\n        gap: 48px;\n        align-items: start;\n        margin-bottom: 72px;\n    }\n\n    .prosaunas-specs-grid {\n        display: grid;\n        grid-template-columns: 1fr 1fr;\n        gap: 1px;\n        background: var(--border);\n        border: 1px solid var(--border);\n        border-radius: 4px;\n        overflow: hidden;\n    }\n\n    .prosaunas-spec-row {\n        background: var(--white);\n        padding: 13px 16px;\n        display: flex;\n        flex-direction: column;\n        gap: 3px;\n    }\n\n    .prosaunas-spec-row:nth-child(even) {\n        background: var(--light-grey);\n    }\n\n    .prosaunas-spec-label {\n        font-size: 1.5rem;\n        font-weight: 700;\n        text-transform: uppercase;\n        letter-spacing: 0.08em;\n        color: var(--grey);\n    }\n\n    .prosaunas-spec-value {\n        font-size: 1.5rem;\n        font-weight: 600;\n        color: var(--navy);\n    }\n\n    .prosaunas-nominal-note {\n        margin-top: 20px;\n        padding: 14px 18px;\n        background: #fffbf2;\n        border: 1px solid #e8d9b0;\n        border-radius: 10px;\n        font-size: 1.5rem;\n        color: #6b5523;\n        line-height: 1.6;\n    }\n\n    .prosaunas-nominal-note strong {\n        font-weight: 700;\n    }\n\n    .prosaunas-specs-side img {\n        width: 100%;\n        border-radius: 4px;\n        display: block;\n        aspect-ratio: 3\/4;\n        object-fit: cover;\n    }\n\n    .prosaunas-specs-side figcaption {\n        font-size: 0.78rem;\n        color: var(--grey);\n        margin-top: 8px;\n        text-align: center;\n    }\n\n    \/* ── SHIPPING ── *\/\n    .prosaunas-shipping-block {\n        background: var(--light-grey);\n        border-radius: 20px;\n        padding: 36px 40px;\n        margin-bottom: 72px;\n        display: grid;\n        grid-template-columns: 1fr 1fr;\n        gap: 40px;\n        align-items: start;\n    }\n\n    .prosaunas-shipping-block h2 {\n        \/* font-family: 'Playfair Display', serif; *\/\n        color: var(--navy);\n        font-size: 3rem;\n        margin-bottom: 14px;\n    }\n\n    .prosaunas-shipping-block p {\n        font-size: 1.5rem;\n        color: #444;\n        line-height: 1.75;\n        margin-bottom: 14px;\n    }\n\n    .prosaunas-shipping-block ul {\n        padding-left: 18px;\n    }\n\n    .prosaunas-shipping-block li {\n        font-size: 1.5rem;\n        color: var(--grey);\n        line-height: 2.1;\n    }\n\n    .prosaunas-shipping-contact {\n        background: var(--navy);\n        border-radius: 20px;\n        padding: 28px 24px;\n    }\n\n    .prosaunas-shipping-contact h3 {\n        \/* font-family: 'Playfair Display', serif; *\/\n        font-size: 2.5rem;\n        margin-bottom: 14px;\n        color: var(--white);\n    }\n\n    .prosaunas-shipping-contact p {\n        font-size: 1.5rem;\n        color: rgba(255, 255, 255, 0.75);\n        line-height: 1.7;\n        margin-bottom: 10px;\n    }\n\n    .prosaunas-shipping-contact a {\n        color: #fff;\n        text-decoration: none;\n        font-weight: 600;\n    }\n\n    \/* ── QUALITY ── *\/\n    .prosaunas-quality-section {\n        text-align: center;\n        margin-bottom: 60px;\n    }\n\n    .prosaunas-quality-section h2 {\n        \/* font-family: 'Playfair Display', serif; *\/\n        color: var(--navy);\n        font-size: 3rem;\n        margin-bottom: 14px;\n    }\n\n    .prosaunas-quality-section p {\n        color: var(--grey);\n        font-size: 1.5rem;\n        max-width: 680px;\n        margin: 0 auto 36px;\n        line-height: 1.75;\n    }\n\n    .prosaunas-quality-stats {\n        display: flex;\n        justify-content: center;\n        gap: 64px;\n    }\n\n    .prosaunas-stat-number {\n        \/* font-family: 'Playfair Display', serif; *\/\n        font-size: 3rem;\n        font-weight: 700;\n        color: var(--navy);\n        line-height: 1;\n    }\n\n    .prosaunas-stat-label {\n        font-size: 1.5rem;\n        color: var(--grey);\n        text-transform: uppercase;\n        letter-spacing: 0.06em;\n        margin-top: 5px;\n    }\n\n    \/* ── WHAT'S INCLUDED ── *\/\n    .prosaunas-included-block {\n        display: grid;\n        grid-template-columns: 340px 1fr;\n        gap: 48px;\n        align-items: center;\n        margin-bottom: 72px;\n    }\n\n    .prosaunas-included-image img {\n        width: 100%;\n        border-radius: 4px;\n        display: block;\n        aspect-ratio: 4\/3;\n        object-fit: cover;\n    }\n\n    .prosaunas-included-list {\n        list-style: none;\n        padding: 0;\n        margin: 0;\n        display: flex;\n        flex-direction: column;\n        gap: 12px;\n    }\n\n    .prosaunas-included-item {\n        display: flex;\n        align-items: center;\n        gap: 14px;\n        padding: 16px 20px;\n        background: var(--light-grey);\n        border: 1px solid var(--border);\n        border-left: 4px solid var(--navy);\n        border-radius: 20px;\n    }\n\n    .prosaunas-included-icon {\n        display: flex;\n        align-items: center;\n        justify-content: center;\n        width: 28px;\n        height: 28px;\n        min-width: 28px;\n        background: var(--navy);\n        color: var(--white);\n        font-size: 1.6rem;\n        font-weight: 700;\n        border-radius: 50%;\n    }\n\n    .prosaunas-included-text {\n        font-size: 1.4rem;\n        font-weight: 500;\n        color: #1a1a1a;\n    }\n\n    @media (max-width: 860px) {\n        .prosaunas-included-block {\n            grid-template-columns: 1fr;\n        }\n    }\n\n    \/* ── RESPONSIVE ── *\/\n    @media (max-width: 860px) {\n\n        .prosaunas-breadcrumb {\n            padding: 10px 20px;\n        }\n\n        .prosaunas-hero-banner {\n            height: 300px;\n        }\n\n        .prosaunas-hero-overlay {\n            padding: 0 24px;\n        }\n\n        .prosaunas-hero-text h1 {\n            font-size: 1.8rem;\n        }\n\n        .prosaunas-content-wrap {\n            padding: 32px 20px;\n        }\n\n        .prosaunas-intro-block,\n        .prosaunas-features-block,\n        .prosaunas-specs-block,\n        .prosaunas-shipping-block {\n            grid-template-columns: 1fr;\n        }\n\n        .prosaunas-features-side {\n            flex-direction: row;\n            position: static;\n        }\n\n        .prosaunas-features-side img {\n            flex: 1;\n            aspect-ratio: 1 !important;\n            width: 50px;\n        }\n\n        .prosaunas-why-cards {\n            grid-template-columns: 1fr;\n        }\n\n        .prosaunas-quality-stats {\n            gap: 28px;\n        }\n\n        .prosaunas-specs-grid {\n            grid-template-columns: 1fr;\n        }\n    }\n\u003c\/style\u003e\n\u003c!-- HERO — full-width image with title overlaid --\u003e\n\u003cdiv class=\"prosaunas-hero-banner\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0585\/1224\/4854\/files\/PROSAUNAS-Thermo-Aspen-Interior-2_1c1c3a69-a731-40e6-b4ea-0235b783608b.jpg?v=1775552826\" alt=\"PROSAUNAS Wood\"\u003e\n\u003cdiv class=\"prosaunas-hero-overlay\"\u003e\n\u003cdiv class=\"prosaunas-hero-text\"\u003e\n\u003cdiv class=\"prosaunas-badge\"\u003eSauna Wood · Bench \u0026amp; Floor Material\u003c\/div\u003e\n\u003ch1\u003eProSaunas ALDER 1X5 (15mm x 120mm) T\u0026amp;G STS4\u003c\/h1\u003e\n\u003cp class=\"prosaunas-subtitle\"\u003eSauna Wood, Tongue \u0026amp; Groove, STS4 Profile, Nickel-Gap, Wall Material\u003c\/p\u003e\n\u003cp class=\"prosaunas-sku\"\u003eSKU: WOOD741-1  ·  Model: THERMO-ASPEN 2X2 S4SEE SHP\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-content-wrap\"\u003e\n\u003c!-- WHAT IS THIS PRODUCT --\u003e\n\u003cdiv class=\"prosaunas-component-banner\"\u003e\n\u003cp\u003e🪵 \u003cstrong\u003eWhat is this material used for?\u003c\/strong\u003e This is interior sauna paneling timber, intended for covering the walls and ceilings within your sauna. It creates the visible finish, supports even heat circulation and retention, and defines the overall look and feel of your sauna space.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- INTRO: sauna interior photo + description text side by side --\u003e\n\u003cdiv class=\"prosaunas-intro-block\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0585\/1224\/4854\/files\/WOOD741-Alder-1x5-_15mmx120mm_T_G-STS4-NICKEL-GAP-6_-1.jpg?v=1775208609\" alt=\"Premium sauna interior showing bench construction with natural wood\"\u003e\n\u003cdiv class=\"prosaunas-intro-text\"\u003e\n\u003ch2\u003eRefined Panels. Seamless Style.\u003c\/h2\u003e\n\u003cp\u003ePROSAUNAS Alder 1×5 STS4 is a high-quality sauna cladding wood crafted to provide a smooth, consistent finish across sauna walls and ceilings. With its tongue and groove design and subtle nickel-gap profile, it delivers a clean, uniform appearance while allowing for natural expansion.\u003c\/p\u003e\n\u003cp\u003eAlder is valued for its warm tone, fine texture, and low resin content, making it comfortable to the touch even in high temperatures. Its stable structure helps maintain shape and performance under the intense heat and humidity of sauna conditions.\u003c\/p\u003e\n\u003cp\u003eEach board features an STS4 profile, designed for precise alignment and easy installation. The tongue and groove connection ensures a secure fit, while the nickel-gap detail enhances visual depth and airflow between panels.\u003c\/p\u003e\n\u003cp\u003ePROSAUNAS uses carefully selected Alder timber to ensure consistent color, smooth grain, and reliable durability. The result is an elegant and practical wall material suitable for both home and commercial sauna interiors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-spec-chips\"\u003e\n\u003cdiv class=\"prosaunas-chip\"\u003e\n\u003cstrong\u003eSpecies:\u003c\/strong\u003e Alder\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-chip\"\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e STS4 Tongue \u0026amp; Groove\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-chip\"\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Wall \u0026amp; Ceiling Cladding\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-chip\"\u003e\n\u003cstrong\u003eGrain:\u003c\/strong\u003e Fine, Even Texture\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-chip\"\u003e\n\u003cstrong\u003eSurface:\u003c\/strong\u003e Smooth Planed Finish\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-chip\"\u003e\n\u003cstrong\u003eNominal Size:\u003c\/strong\u003e 1X5 (15mm x 120mm)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FEATURES \u0026 BENEFITS — table with wood detail images alongside --\u003e\n\u003ch2 class=\"prosaunas-section-title\"\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\n\u003cdiv class=\"prosaunas-features-block\"\u003e\n\u003ctable class=\"prosaunas-features-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eBenefit - Why It Matters to Your Build\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlder Sauna Wood\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"prosaunas-benefit-icon\"\u003e✦\u003c\/span\u003eNaturally warm hardwood suited for sauna interiors - provides a smooth feel, low resin content, and comfortable surface in high heat.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSTS4 Tongue \u0026amp; Groove Profile\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"prosaunas-benefit-icon\"\u003e✦\u003c\/span\u003eInterlocking board design with nickel-gap spacing - ensures a secure fit and visually consistent panel alignment.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNickel-Gap Detail\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"prosaunas-benefit-icon\"\u003e✦\u003c\/span\u003eSubtle shadow-line spacing between boards - adds depth while allowing for natural expansion and airflow.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall \u0026amp; Ceiling Cladding Use\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"prosaunas-benefit-icon\"\u003e✦\u003c\/span\u003eDesigned for full interior coverage - creates a clean, continuous finish across sauna surfaces.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStable in Heat \u0026amp; Humidity\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"prosaunas-benefit-icon\"\u003e✦\u003c\/span\u003eMaintains form under temperature and moisture changes - reliable for long-term sauna performance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmooth Planed Surface\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"prosaunas-benefit-icon\"\u003e✦\u003c\/span\u003eEvenly finished faces for a refined look - enhances comfort and overall aesthetic quality.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFine, Consistent Grain\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"prosaunas-benefit-icon\"\u003e✦\u003c\/span\u003eUniform texture with gentle pattern - delivers a calm and cohesive visual appearance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow Resin Content\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"prosaunas-benefit-icon\"\u003e✦\u003c\/span\u003eMinimal sap presence - prevents stickiness and improves comfort during sauna use.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEasy Installation System\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"prosaunas-benefit-icon\"\u003e✦\u003c\/span\u003ePrecision-milled boards fit together smoothly - simplifies fitting and reduces installation time.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdeal for Sauna Interiors\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"prosaunas-benefit-icon\"\u003e✦\u003c\/span\u003eBalances durability, appearance, and comfort - perfect for both residential and commercial sauna spaces.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- Wood detail images beside the table --\u003e\n\u003cdiv class=\"prosaunas-features-side\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0585\/1224\/4854\/files\/WOOD741-Alder-1x5-_15mmx120mm_T_G-STS4-NICKEL-GAP-6_-3.jpg?v=1775208609\" alt=\"Close-up Wood\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0585\/1224\/4854\/files\/WOOD741-Alder-1x5-_15mmx120mm_T_G-STS4-NICKEL-GAP-6_-4.jpg?v=1775208609\" alt=\"Close-up Wood\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- WHY CEDAR cards --\u003e\n\u003cdiv class=\"prosaunas-why-section\"\u003e\n\u003ch2\u003eWhy Choose Alder STS4 Cladding for Your Sauna Interior?\u003c\/h2\u003e\n\u003cp class=\"prosaunas-sub\"\u003eThree reasons sauna builders prefer Alder for interior wall and ceiling finishes.\u003c\/p\u003e\n\u003cdiv class=\"prosaunas-why-cards\"\u003e\n\u003cdiv class=\"prosaunas-why-card\"\u003e\n\u003cdiv class=\"prosaunas-icon\"\u003e🌡️\u003c\/div\u003e\n\u003ch3\u003eStable in Sauna Heat\u003c\/h3\u003e\n\u003cp\u003eAlder performs reliably in high temperatures. Its stable structure helps prevent warping and movement - keeping wall panels aligned and looking consistent over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-why-card\"\u003e\n\u003cdiv class=\"prosaunas-icon\"\u003e💧\u003c\/div\u003e\n\u003ch3\u003eHandles Moisture Well\u003c\/h3\u003e\n\u003cp\u003eWith low resin content and balanced moisture behavior, Alder resists humidity-related issues. This helps maintain durability and comfort in demanding sauna conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-why-card\"\u003e\n\u003cdiv class=\"prosaunas-icon\"\u003e🎨\u003c\/div\u003e\n\u003ch3\u003eWarm, Natural Appearance\u003c\/h3\u003e\n\u003cp\u003eIts smooth surface, fine grain, and soft color tone create a welcoming look. Ideal for achieving a clean, cohesive, and relaxing sauna environment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- SPECIFICATIONS with profile image alongside --\u003e\n\u003ch2 class=\"prosaunas-section-title\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"prosaunas-specs-block\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"prosaunas-specs-grid\"\u003e\n\u003cdiv class=\"prosaunas-spec-row\"\u003e\n\u003cspan class=\"prosaunas-spec-label\"\u003eSpecies\u003c\/span\u003e \u003cspan class=\"prosaunas-spec-value\"\u003eAlder\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-spec-row\"\u003e\n\u003cspan class=\"prosaunas-spec-label\"\u003eNominal Size\u003c\/span\u003e \u003cspan class=\"prosaunas-spec-value\"\u003e1X5\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-spec-row\"\u003e\n\u003cspan class=\"prosaunas-spec-label\"\u003eProfile\u003c\/span\u003e \u003cspan class=\"prosaunas-spec-value\"\u003eSTS4 Tongue \u0026amp; Groove (Nickel-Gap Profile)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-spec-row\"\u003e\n\u003cspan class=\"prosaunas-spec-label\"\u003eGrain Type\u003c\/span\u003e \u003cspan class=\"prosaunas-spec-value\"\u003eFine, Even Grain\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-spec-row\"\u003e\n\u003cspan class=\"prosaunas-spec-label\"\u003eFinish\u003c\/span\u003e \u003cspan class=\"prosaunas-spec-value\"\u003eNatural\/Unoiled\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-spec-row\"\u003e\n\u003cspan class=\"prosaunas-spec-label\"\u003eApplication\u003c\/span\u003e \u003cspan class=\"prosaunas-spec-value\"\u003eWall \u0026amp; Ceiling Cladding\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-spec-row\"\u003e\n\u003cspan class=\"prosaunas-spec-label\"\u003eWall Coverage\u003c\/span\u003e \u003cspan class=\"prosaunas-spec-value\"\u003e4.1\" (104mm)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-spec-row\"\u003e\n\u003cspan class=\"prosaunas-spec-label\"\u003eProduct Width\u003c\/span\u003e \u003cspan class=\"prosaunas-spec-value\"\u003e4.75\" (120mm)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-spec-row\"\u003e\n\u003cspan class=\"prosaunas-spec-label\"\u003eProduct Thickness\u003c\/span\u003e \u003cspan class=\"prosaunas-spec-value\"\u003e0.59\" (15mm)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-spec-row\"\u003e\n\u003cspan class=\"prosaunas-spec-label\"\u003eLength Availability\u003c\/span\u003e \u003cspan class=\"prosaunas-spec-value\"\u003eUp to 10'\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-spec-row\"\u003e\n\u003cspan class=\"prosaunas-spec-label\"\u003eColor\u003c\/span\u003e \u003cspan class=\"prosaunas-spec-value\"\u003eLight Reddish-Brown Tone\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-spec-row\"\u003e\n\u003cspan class=\"prosaunas-spec-label\"\u003eSKU\u003c\/span\u003e \u003cspan class=\"prosaunas-spec-value\"\u003eWOOD741-1\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-nominal-note\"\u003e\n\u003cstrong\u003e⚠ Nominal vs. Actual Lumber Sizes:\u003c\/strong\u003e In North America, wood sizes are listed in \u003cem\u003enominal\u003c\/em\u003e measurements, which is the lumber’s size when it is cut from moist logs. After shrinkage from drying and surfacing, the actual size of lumber will be less than its nominal size. Please see the diagram for actual dimensions.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"prosaunas-specs-side\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0585\/1224\/4854\/files\/WOOD741-Alder-1x5-_15mmx120mm_T_G-STS4-NICKEL-GAP-6_-3dimensions.jpg?v=1775208609\" alt=\"Sauna wall panel profile showing tongue and groove V-joint edges\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c!-- WHAT'S INCLUDED --\u003e\n\u003ch2 class=\"prosaunas-section-title\"\u003eWhat's Included\u003c\/h2\u003e\n\u003cdiv class=\"prosaunas-included-block\"\u003e\n\u003cfigure class=\"prosaunas-included-image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0585\/1224\/4854\/files\/WOOD741-Alder-1x5-_15mmx120mm_T_G-STS4-NICKEL-GAP-6_-5.jpg?v=1775208609\" alt=\"Sauna wall panel profile view showing tongue and groove V-joint edges\"\u003e\u003c\/figure\u003e\n\u003cul class=\"prosaunas-included-list\"\u003e\n\u003cli class=\"prosaunas-included-item\"\u003e\n\u003cspan class=\"prosaunas-included-icon\"\u003e✓\u003c\/span\u003e \u003cspan class=\"prosaunas-included-text\"\u003eAlder 1×5 Cladding Boards\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"prosaunas-included-item\"\u003e\n\u003cspan class=\"prosaunas-included-icon\"\u003e✓\u003c\/span\u003e \u003cspan class=\"prosaunas-included-text\"\u003eSTS4 Tongue \u0026amp; Groove Profile\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- SHIPPING --\u003e\n\u003cdiv class=\"prosaunas-shipping-block\"\u003e\n\u003cdiv\u003e\n\u003ch2\u003eShipping Information\u003c\/h2\u003e\n\u003cp\u003eWood products ship via standard freight. Shipping cost is calculated based on order quantity, board lengths, and your delivery location — it is not included in the listed price and will be quoted separately.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStandard freight shipping on all wood orders\u003c\/li\u003e\n\u003cli\u003eShipping cost varies by order size and destination\u003c\/li\u003e\n\u003cli\u003eContact PROSAUNAS for a freight quote before ordering\u003c\/li\u003e\n\u003cli\u003eBulk orders may qualify for volume pricing\u003c\/li\u003e\n\u003cli\u003eAll orders inspected before shipment for quality assurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-shipping-contact\"\u003e\n\u003ch3\u003e📞 Have Questions?\u003c\/h3\u003e\n\u003cp\u003eOur team has 55+ years of experience helping builders select the right wood. We're happy to help you calculate quantities, confirm sizing, or get a shipping quote.\u003c\/p\u003e\n\u003cp\u003eCall: \u003ca href=\"tel:8009572862\" style=\"color: #fff;\"\u003e(800) 957-2862\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eEmail: \u003ca href=\"mailto:info@peakprimalwellness.com\" style=\"color: #fff;\"\u003einfo@peakprimalwellness.com\u003c\/a\u003e\u003c\/p\u003e\n\u003cp style=\"margin-top: 10px; font-size: 0.78rem; color: rgba(255,255,255,0.45);\"\u003eMon–Fri 8:00am–5:00pm CT\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- QUALITY PROMISE --\u003e\n\u003cdiv class=\"prosaunas-quality-section\"\u003e\n\u003ch2\u003eThe PROSAUNAS Quality Promise\u003c\/h2\u003e\n\u003cp\u003ePROSAUNAS carefully selects only the finest wood from Northern Europe and Canada, ensuring quality and consistency that meets our stringent standards. Every board is inspected before it ships — because a great sauna starts with great materials.\u003c\/p\u003e\n\u003cdiv class=\"prosaunas-quality-stats\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"prosaunas-stat-number\"\u003e55+\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-stat-label\"\u003eYears of Experience\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"prosaunas-stat-number\"\u003e100%\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-stat-label\"\u003eQuality Inspected\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"prosaunas-stat-number\"\u003eNorth America\u003c\/div\u003e\n\u003cdiv class=\"prosaunas-stat-label\"\u003eServing Builders Across\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/content-wrap --\u003e","brand":"ProSaunas","offers":[{"title":"1' (11-1\/2\")","offer_id":43253225881718,"sku":"WOOD741-1","price":6.55,"currency_code":"USD","in_stock":true},{"title":"6' (71-1\/4\")","offer_id":43253225947254,"sku":"WOOD741-6","price":39.27,"currency_code":"USD","in_stock":false},{"title":"8' (94-3\/4\")","offer_id":43253226012790,"sku":"WOOD741-8","price":52.36,"currency_code":"USD","in_stock":false},{"title":"10' (118-1\/4\")","offer_id":43253226078326,"sku":"WOOD741-10","price":65.45,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/1224\/4854\/files\/WOOD741-Alder-1x5-_15mmx120mm_T_G-STS4-NICKEL-GAP-6_-2.jpg?v=1778622308","url":"https:\/\/peakprimalwellness.com\/products\/prosaunas-alder-1x5-t-g-sts4-wood741-1","provider":"Peak Primal Wellness","version":"1.0","type":"link"}