{"product_id":"4x4-kd-fir-dimensional-lumber","title":"4\" x 4\" #2 \u0026 Better Kiln-Dried Fir Dimensional Lumber, KDHT S4S","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\u003e4\" x 4\" #2 \u0026amp; Better Kiln-Dried Fir Lumber (KDHT, S4S)\u003c\/h2\u003e\n\u003cdiv class=\"pb-intro\"\u003e\n\u003cp\u003eKiln-dried, heat-treated (KDHT) fir 4x4, graded #2 \u0026amp; Better and surfaced on four sides (S4S) to an actual 3-1\/2 in. x 3-1\/2 in. Stocked in 8, 10 and 12 ft. lengths.\u003c\/p\u003e\n\u003cp\u003eDry stock holds its size better than green lumber, which suits posts, framing and bracing where shrinkage matters. \u003cstrong\u003e#2 \u0026amp; Better is a structural grade, not an appearance grade.\u003c\/strong\u003e Expect knots and natural character.\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\u003eKiln-dried and heat-treated (KDHT) for lower moisture content than green stock\u003c\/li\u003e\n\u003cli\u003eSurfaced on four sides (S4S) for uniform 3-1\/2 in. x 3-1\/2 in. dimensions\u003c\/li\u003e\n\u003cli\u003e#2 \u0026amp; Better structural grade fir\u003c\/li\u003e\n\u003cli\u003eThree stocked lengths: 8, 10 and 12 ft.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCommonly used for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePosts for decks, fences and pergolas (use pressure-treated stock for ground contact)\u003c\/li\u003e\n\u003cli\u003eInterior structural framing, including single- and multi-family homes and additions\u003c\/li\u003e\n\u003cli\u003eBarns, sheds, and commercial and industrial construction\u003c\/li\u003e\n\u003cli\u003eBracing and concrete forming\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\"\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\u003e#2 \u0026amp; Better\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDrying\u003c\/th\u003e\n\u003ctd\u003eKiln-dried, heat-treated (KDHT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSurfacing\u003c\/th\u003e\n\u003ctd\u003eS4S (surfaced four sides)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eNominal size\u003c\/th\u003e\n\u003ctd\u003e4 in. x 4 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eActual size (T x W)\u003c\/th\u003e\n\u003ctd\u003e3-1\/2 in. x 3-1\/2 in. (89 mm x 89 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAvailable lengths\u003c\/th\u003e\n\u003ctd\u003e8 ft., 10 ft., 12 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"pb-note\"\u003eActual 4x4 dimensions are 3-1\/2 in. x 3-1\/2 in. (89 x 89 mm). Dry (S-Dry) lumber has a moisture content of 19 percent or less. Source: \u003ca href=\"https:\/\/www.dimensions.com\/element\/lumber-4-by\" target=\"_blank\" rel=\"noopener\"\u003eLumber 4x4 actual dimensions, dimensions.com\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 is the actual size of a 4x4?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003e3-1\/2 in. x 3-1\/2 in. (89 mm x 89 mm). The 4x4 name is the nominal size.\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\u003eKiln-dried, heat-treated. The lumber has been dried in a kiln, so it carries less moisture than green stock.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pb-acc pb-q\"\u003e\u003csummary\u003eCan I use this in the ground or on a deck exposed to the weather?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eUntreated fir is not rated for ground contact. For buried posts, choose pressure-treated lumber.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pb-acc pb-q\"\u003e\u003csummary\u003eIs #2 \u0026amp; Better an appearance grade?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eNo. It is a structural grade, and knots and other natural characteristics are allowed.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cp class=\"pb-note\"\u003eSee our grading guide for what each grade allows: Source: \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0685\/4901\/7919\/files\/Dimensional_Lumber_Grading_Guide.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDimensional lumber grading guide (PDF)\u003c\/a\u003e.\u003c\/p\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\/4x4-kd-fir-dimensional-lumber#product\",\"name\":\"4\\\" x 4\\\" #2 \u0026 Better Kiln-Dried Fir Dimensional Lumber, KDHT S4S\",\"url\":\"https:\/\/griffbuildingsupplies.com\/products\/4x4-kd-fir-dimensional-lumber\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Griff\"},\"category\":\"Hardware \u003e Building Materials \u003e Lumber \u0026 Sheet Stock\",\"description\":\"4x4 #2 \u0026 Better kiln-dried, heat-treated (KDHT) fir, surfaced 4 sides. Actual 3-1\/2 x 3-1\/2 in., 8, 10 and 12 ft. In stock in New Westminster, BC.\",\"material\":\"Fir\",\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Species\",\"value\":\"Fir\"},{\"@type\":\"PropertyValue\",\"name\":\"Grade\",\"value\":\"#2 \u0026amp; Better\"},{\"@type\":\"PropertyValue\",\"name\":\"Drying\",\"value\":\"Kiln-dried, heat-treated (KDHT)\"},{\"@type\":\"PropertyValue\",\"name\":\"Surfacing\",\"value\":\"S4S (surfaced four sides)\"},{\"@type\":\"PropertyValue\",\"name\":\"Nominal size\",\"value\":\"4 in. x 4 in.\"},{\"@type\":\"PropertyValue\",\"name\":\"Actual size (T x W)\",\"value\":\"3-1\/2 in. x 3-1\/2 in. (89 mm x 89 mm)\"},{\"@type\":\"PropertyValue\",\"name\":\"Available lengths\",\"value\":\"8 ft., 10 ft., 12 ft.\"}]},{\"@type\":\"FAQPage\",\"@id\":\"https:\/\/griffbuildingsupplies.com\/products\/4x4-kd-fir-dimensional-lumber#faq\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is the actual size of a 4x4?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"3-1\/2 in. x 3-1\/2 in. (89 mm x 89 mm). The 4x4 name is the nominal size.\"}},{\"@type\":\"Question\",\"name\":\"What does KDHT mean?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Kiln-dried, heat-treated. The lumber has been dried in a kiln, so it carries less moisture than green stock.\"}},{\"@type\":\"Question\",\"name\":\"Can I use this in the ground or on a deck exposed to the weather?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Untreated fir is not rated for ground contact. For buried posts, choose pressure-treated lumber.\"}},{\"@type\":\"Question\",\"name\":\"Is #2 \u0026amp; Better an appearance grade?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. It is a structural grade, and knots and other natural characteristics are allowed.\"}}]}]}\u003c\/script\u003e","brand":"Griff","offers":[{"title":"8'","offer_id":67788254314815,"sku":"04042FK408","price":13.29,"currency_code":"CAD","in_stock":true},{"title":"10'","offer_id":67788254347583,"sku":"04042FK410","price":19.99,"currency_code":"CAD","in_stock":true},{"title":"12'","offer_id":67788254380351,"sku":"04042FK412","price":23.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/4901\/7919\/files\/4x4_2.png?v=1792170426","url":"https:\/\/griffbuildingsupplies.com\/fa\/products\/4x4-kd-fir-dimensional-lumber","provider":"Griff Building Supplies","version":"1.0","type":"link"}