{"product_id":"2x10-select-structural-fir-kdht-s4s-dimensional-lumber","title":"2\" x 10\" Select Structural Fir KDHT S4S Dimensional Lumber","description":"\u003cstyle\u003e\n.pb-wrap{--pb-line:#e1e3e5;--pb-head:#f6f6f7;max-width:100%}\n.pb-wrap .pb-intro{margin-bottom:20px}\n.pb-acc{border:1px solid var(--pb-line);border-radius:8px;margin:0 0 8px;overflow:hidden}\n.pb-acc\u003esummary{cursor:pointer;padding:14px 16px;font-weight:600;line-height:1.35;\n list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}\n.pb-acc\u003esummary::-webkit-details-marker{display:none}\n.pb-acc\u003esummary::marker{content:\"\"}\n.pb-acc\u003esummary::after{content:\"+\";font-size:22px;font-weight:400;line-height:1;flex:0 0 auto}\n.pb-acc[open]\u003esummary::after{content:\"\\2212\"}\n.pb-acc[open]\u003esummary{border-bottom:1px solid var(--pb-line);background:var(--pb-head)}\n.pb-acc\u003esummary:hover{background:var(--pb-head)}\n.pb-acc .pb-body{padding:16px}\n.pb-acc .pb-body\u003e:first-child{margin-top:0}\n.pb-acc .pb-body\u003e:last-child{margin-bottom:0}\n.pb-q{border:0;border-bottom:1px solid var(--pb-line);border-radius:0;margin:0}\n.pb-q:last-child{border-bottom:0}\n.pb-q\u003esummary{padding:12px 0;font-weight:600}\n.pb-q[open]\u003esummary{background:transparent;border-bottom:0}\n.pb-q\u003esummary:hover{background:transparent;text-decoration:underline}\n.pb-q .pb-body{padding:0 0 12px}\n.pb-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}\n.pb-table{width:100%;border-collapse:collapse;font-size:14px;min-width:380px}\n.pb-table th,.pb-table td{border:1px solid var(--pb-line);padding:8px 10px;\n text-align:left;vertical-align:top}\n.pb-table thead th{background:var(--pb-head)}\n.pb-table caption{caption-side:top;text-align:left;font-weight:600;padding:0 0 8px}\n.pb-note{font-size:13px;opacity:.75;margin-top:16px}\n.pb-wrap a{color:#3b82f6}\n.pb-wrap a:hover{color:#2563eb}\n\u003c\/style\u003e\u003cdiv class=\"pb-wrap\"\u003e\n\u003ch2\u003e2\" x 10\" Select Structural Fir KDHT S4S Dimensional Lumber\u003c\/h2\u003e\n\u003cdiv class=\"pb-intro\"\u003e\n\u003cp\u003eThis is a 2x10 in Select Structural fir, kiln dried and heat treated (KDHT) and surfaced smooth on all four sides (S4S). It measures 1-1\/2 in. x 9-1\/4 in. actual and comes in a 24 ft length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSelect Structural is the top grade of structural framing lumber.\u003c\/strong\u003e It has the fewest and smallest defects of the structural light framing grades and the highest design values, which makes it a fit for heavily loaded joists, headers and long spans. Span, load and local code decide the size you need, so confirm it with your building inspector or engineer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdetails class=\"pb-acc\"\u003e\u003csummary\u003eFeatures and Common Uses\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\n\u003cul\u003e\n\u003cli\u003eSelect Structural grade, the highest structural light framing grade, with the fewest and smallest defects\u003c\/li\u003e\n\u003cli\u003eFir is a strong, stiff framing softwood that holds nails and screws well.\u003c\/li\u003e\n\u003cli\u003eKiln dried to 19% moisture content or less, so it arrives drier and more stable than green lumber\u003c\/li\u003e\n\u003cli\u003eHeat treated (KD-HT) to a core temperature of at least 56 C for a minimum of 30 minutes\u003c\/li\u003e\n\u003cli\u003eSurfaced smooth on all four sides (S4S) for a consistent 1-1\/2 in. x 9-1\/4 in. actual size\u003c\/li\u003e\n\u003cli\u003eSold in packs of 105 pieces\u003c\/li\u003e\n\u003cli\u003eNot pressure treated, so it is for dry, above-ground use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCommonly used for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLong-span floor joists and rafters\u003c\/li\u003e\n\u003cli\u003eHeaders and beams over wide openings\u003c\/li\u003e\n\u003cli\u003eHeavily loaded framing and floor systems\u003c\/li\u003e\n\u003cli\u003eVisible framing where straight, clean boards matter\u003c\/li\u003e\n\u003cli\u003eFraming for single and multi-family homes, additions, barns, sheds, and commercial and industrial construction\u003c\/li\u003e\n\u003cli\u003eNon-structural bracing for concrete forming and packaging for shipping\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/details\u003e\u003cdetails class=\"pb-acc\"\u003e\u003csummary\u003eSpecifications\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\n\u003cdiv class=\"pb-scroll\"\u003e\u003ctable class=\"pb-table\"\u003e\n\u003ccaption\u003eProduct Specifications\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eProduct\u003c\/th\u003e\n\u003ctd\u003e2x10 Select Structural Fir, KDHT, S4S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSpecies\u003c\/th\u003e\n\u003ctd\u003eFir\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGrade\u003c\/th\u003e\n\u003ctd\u003eSelect Structural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eNominal size\u003c\/th\u003e\n\u003ctd\u003e2 in. x 10 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eActual size\u003c\/th\u003e\n\u003ctd\u003e1-1\/2 in. x 9-1\/4 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAvailable length\u003c\/th\u003e\n\u003ctd\u003e24 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e105 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMoisture content\u003c\/th\u003e\n\u003ctd\u003eKiln dried, 19% maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeat treatment\u003c\/th\u003e\n\u003ctd\u003eKD-HT, core temperature of at least 56 C for 30 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSurfacing\u003c\/th\u003e\n\u003ctd\u003eS4S, surfaced on four sides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePressure treated\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"pb-note\"\u003eGrade, species and heat-treatment marks are stamped on each board and are the governing record for the piece you receive. Span, load and local code decide where the lumber can be used, so confirm with your building inspector or engineer for structural work. See also Griff's \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0685\/4901\/7919\/files\/Dimensional_Lumber_Grading_Guide.pdf?v=1672437576\" target=\"_blank\" rel=\"noopener\"\u003eDimensional Lumber Grading Guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/details\u003e\u003cdetails class=\"pb-acc\"\u003e\u003csummary\u003eFrequently Asked Questions\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\n\u003cdetails class=\"pb-acc pb-q\"\u003e\u003csummary\u003eWhat does Select Structural mean?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eSelect Structural is the highest grade in structural light framing, above No. 1. The boards have the fewest and smallest knots and defects and the highest design stresses, so they carry more load than the lower grades.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pb-acc pb-q\"\u003e\u003csummary\u003eWhat does KDHT mean?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eKDHT means kiln dried and heat treated. The board is dried to 19% moisture content or less and heated to a core temperature of at least 56 C for a minimum of 30 minutes. It is a heat process, not a chemical preservative treatment.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pb-acc pb-q\"\u003e\u003csummary\u003eWhat is the actual size of a 2x10?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eA 2x10 measures 1-1\/2 in. x 9-1\/4 in. once surfaced. The 2 in. x 10 in. name is the nominal size from before the board was dried and planed.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pb-acc pb-q\"\u003e\u003csummary\u003eCan I use it outside?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eOnly where it stays dry and above ground, or for short-term use. It is not pressure treated, so it will rot in ground contact or constant wet. Choose pressure treated lumber for buried posts and outdoor structures.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Product\",\"@id\":\"https:\/\/griffbuildingsupplies.com\/products\/2x10-select-structural-fir-kdht-s4s-dimensional-lumber#product\",\"name\":\"2\\\" x 10\\\" Select Structural Fir KDHT S4S Dimensional Lumber\",\"url\":\"https:\/\/griffbuildingsupplies.com\/products\/2x10-select-structural-fir-kdht-s4s-dimensional-lumber\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Griff\"},\"category\":\"Hardware \u003e Building Materials \u003e Lumber \u0026 Sheet Stock\",\"description\":\"2x10 Select Structural fir lumber, kiln dried and heat treated, surfaced four sides. 24 ft length. Actual size listed.\",\"material\":\"fir, kiln dried and heat treated\",\"image\":\"\",\"sku\":\"0210SFK424\",\"mpn\":\"0210SFK424\",\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Product\",\"value\":\"2x10 Select Structural Fir, KDHT, S4S\"},{\"@type\":\"PropertyValue\",\"name\":\"Species\",\"value\":\"Fir\"},{\"@type\":\"PropertyValue\",\"name\":\"Grade\",\"value\":\"Select Structural\"},{\"@type\":\"PropertyValue\",\"name\":\"Nominal size\",\"value\":\"2 in. x 10 in.\"},{\"@type\":\"PropertyValue\",\"name\":\"Actual size\",\"value\":\"1-1\/2 in. x 9-1\/4 in.\"},{\"@type\":\"PropertyValue\",\"name\":\"Available length\",\"value\":\"24 ft\"},{\"@type\":\"PropertyValue\",\"name\":\"Pack size\",\"value\":\"105 pieces\"},{\"@type\":\"PropertyValue\",\"name\":\"Moisture content\",\"value\":\"Kiln dried, 19% maximum\"},{\"@type\":\"PropertyValue\",\"name\":\"Heat treatment\",\"value\":\"KD-HT, core temperature of at least 56 C for 30 minutes\"},{\"@type\":\"PropertyValue\",\"name\":\"Surfacing\",\"value\":\"S4S, surfaced on four sides\"},{\"@type\":\"PropertyValue\",\"name\":\"Pressure treated\",\"value\":\"No\"}],\"isRelatedTo\":[{\"@type\":\"Product\",\"name\":\"2\\\" x 4\\\" #2 Grade Fir Dimensional Lumber\"}]},{\"@type\":\"FAQPage\",\"@id\":\"https:\/\/griffbuildingsupplies.com\/products\/2x10-select-structural-fir-kdht-s4s-dimensional-lumber#faq\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What does Select Structural mean?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Select Structural is the highest grade in structural light framing, above No. 1. The boards have the fewest and smallest knots and defects and the highest design stresses, so they carry more load than the lower grades.\"}},{\"@type\":\"Question\",\"name\":\"What does KDHT mean?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"KDHT means kiln dried and heat treated. The board is dried to 19% moisture content or less and heated to a core temperature of at least 56 C for a minimum of 30 minutes. It is a heat process, not a chemical preservative treatment.\"}},{\"@type\":\"Question\",\"name\":\"What is the actual size of a 2x10?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A 2x10 measures 1-1\/2 in. x 9-1\/4 in. once surfaced. The 2 in. x 10 in. name is the nominal size from before the board was dried and planed.\"}},{\"@type\":\"Question\",\"name\":\"Can I use it outside?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Only where it stays dry and above ground, or for short-term use. It is not pressure treated, so it will rot in ground contact or constant wet. Choose pressure treated lumber for buried posts and outdoor structures.\"}}]}]}\u003c\/script\u003e","brand":"Griff","offers":[{"title":"Default Title","offer_id":67879540818239,"sku":"0210SFK424","price":96.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/4901\/7919\/products\/2x10_spruce_3_-min-min_95532728-eeff-42a3-895e-231fc20cad59.jpg?v=1680727173","url":"https:\/\/griffbuildingsupplies.com\/fa\/products\/2x10-select-structural-fir-kdht-s4s-dimensional-lumber","provider":"Griff Building Supplies","version":"1.0","type":"link"}