{"product_id":"6x6-utility-3-green-s4s-fir-dimensional-lumber","title":"6\" x 6\" Utility\/#3 Grade Green S4S Fir 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\u003e6\" x 6\" Utility\/#3 Grade Green S4S Fir Dimensional Lumber\u003c\/h2\u003e\n\u003cdiv class=\"pb-intro\"\u003e\n\u003cp\u003eThis is a 6x6 in Utility\/#3 grade fir, sold green and surfaced smooth on all four sides (S4S). It is a heavy timber size in 8 and 10 ft lengths, used for landscape work, forming, bracing and general-purpose jobs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUtility grade is an economy grade, not structural grade, and it is sold green.\u003c\/strong\u003e It is graded on usefulness and low cost rather than strength or appearance, and it still holds moisture, so it shrinks and can check or twist as it dries. For structural posts and beams, choose a #2 and better 6x6 and confirm what your building inspector requires.\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\u003eUtility\/#3 grade fir, an economy grade that keeps the cost of 6x6 timber down\u003c\/li\u003e\n\u003cli\u003eGreen, with a moisture content above 19%, so it is soft to cut and nail\u003c\/li\u003e\n\u003cli\u003eSurfaced smooth on all four sides (S4S) for square edges and consistent faces\u003c\/li\u003e\n\u003cli\u003eA 6 in. nominal section is stout enough for heavy stakes, blocking and short posts\u003c\/li\u003e\n\u003cli\u003eNot pressure treated, so keep it dry and out of ground contact\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCommonly used for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy blocking, cribbing and temporary supports\u003c\/li\u003e\n\u003cli\u003eConcrete forming, shoring and bracing\u003c\/li\u003e\n\u003cli\u003eLandscape timbers, steps and raised edging in dry, above-ground use\u003c\/li\u003e\n\u003cli\u003eRustic posts and decorative timber work where strength is not critical\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\u003e6x6 Utility\/#3 Fir, Green, 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\u003eUtility\/#3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eNominal size\u003c\/th\u003e\n\u003ctd\u003e6 in. x 6 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eActual size, green\u003c\/th\u003e\n\u003ctd\u003eAbout 5-5\/8 in. x 5-5\/8 in., shrinking toward 5-1\/2 in. as it dries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAvailable lengths\u003c\/th\u003e\n\u003ctd\u003e8 and 10 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMoisture content\u003c\/th\u003e\n\u003ctd\u003eGreen, above 19%\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 moisture marks are stamped on each piece and are the governing record for what you receive. Green lumber changes size as it dries, so confirm the dimensions you need at the counter before you order.\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\u003eCan I use utility grade for posts or beams?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eNot for structural or load-bearing posts or beams unless your building inspector or engineer accepts it. Utility is graded below No. 2 and Standard. Use a #2 and better 6x6 for deck, porch and carport posts, and keep Utility\/#3 for cribbing, forming and general work.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pb-acc pb-q\"\u003e\u003csummary\u003eWhat does green lumber mean?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eGreen means the timber has not been kiln dried and holds moisture above 19%. It is easy to cut and nail, but it shrinks as it dries and can check, twist or cup.\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 6x6?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eGreen 6x6 stock is surfaced a little larger than dry stock, at about 5-5\/8 in. x 5-5\/8 in., and it settles toward 5-1\/2 in. x 5-1\/2 in. as it dries. Contact us if a specific dimension matters.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pb-acc pb-q\"\u003e\u003csummary\u003eWhat does S4S mean?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eS4S means surfaced on four sides. All four faces are planed smooth, so the timber has square, consistent edges and no rough-sawn surface.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pb-acc pb-q\"\u003e\u003csummary\u003eCan I bury it in the ground?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eNo. 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\/6x6-utility-3-green-s4s-fir-dimensional-lumber#product\",\"name\":\"6\\\" x 6\\\" Utility\/#3 Grade Green S4S Fir Dimensional Lumber\",\"url\":\"https:\/\/griffbuildingsupplies.com\/products\/6x6-utility-3-green-s4s-fir-dimensional-lumber\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Griff\"},\"category\":\"Hardware \u003e Building Materials \u003e Lumber \u0026 Sheet Stock\",\"description\":\"6x6 Utility\/#3 fir timber, green and surfaced on four sides. An economy heavy post size for forming and general work. Sold in 8 and 10 ft lengths.\",\"material\":\"Fir, green\",\"image\":\"\",\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Product\",\"value\":\"6x6 Utility\/#3 Fir, Green, S4S\"},{\"@type\":\"PropertyValue\",\"name\":\"Species\",\"value\":\"Fir\"},{\"@type\":\"PropertyValue\",\"name\":\"Grade\",\"value\":\"Utility\/#3\"},{\"@type\":\"PropertyValue\",\"name\":\"Nominal size\",\"value\":\"6 in. x 6 in.\"},{\"@type\":\"PropertyValue\",\"name\":\"Actual size, green\",\"value\":\"About 5-5\/8 in. x 5-5\/8 in., shrinking toward 5-1\/2 in. as it dries\"},{\"@type\":\"PropertyValue\",\"name\":\"Available lengths\",\"value\":\"8 and 10 ft\"},{\"@type\":\"PropertyValue\",\"name\":\"Moisture content\",\"value\":\"Green, above 19%\"},{\"@type\":\"PropertyValue\",\"name\":\"Surfacing\",\"value\":\"S4S, surfaced on four sides\"},{\"@type\":\"PropertyValue\",\"name\":\"Pressure treated\",\"value\":\"No\"},{\"@type\":\"PropertyValue\",\"name\":\"Nominal size\",\"value\":\"6 in. x 6 in.\"},{\"@type\":\"PropertyValue\",\"name\":\"Pressure treated\",\"value\":\"No\"}],\"isRelatedTo\":[{\"@type\":\"Product\",\"name\":\"4\\\" x 4\\\" #2 Grade Fir Dimensional Lumber\"},{\"@type\":\"Product\",\"name\":\"4\\\" x 6\\\" #2 Grade Fir Dimensional Lumber\"}]},{\"@type\":\"FAQPage\",\"@id\":\"https:\/\/griffbuildingsupplies.com\/products\/6x6-utility-3-green-s4s-fir-dimensional-lumber#faq\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Can I use utility grade for posts or beams?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Not for structural or load-bearing posts or beams unless your building inspector or engineer accepts it. Utility is graded below No. 2 and Standard. Use a #2 and better 6x6 for deck, porch and carport posts, and keep Utility\/#3 for cribbing, forming and general work.\"}},{\"@type\":\"Question\",\"name\":\"What does green lumber mean?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Green means the timber has not been kiln dried and holds moisture above 19%. It is easy to cut and nail, but it shrinks as it dries and can check, twist or cup.\"}},{\"@type\":\"Question\",\"name\":\"What is the actual size of a 6x6?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Green 6x6 stock is surfaced a little larger than dry stock, at about 5-5\/8 in. x 5-5\/8 in., and it settles toward 5-1\/2 in. x 5-1\/2 in. as it dries. Contact us if a specific dimension matters.\"}},{\"@type\":\"Question\",\"name\":\"What does S4S mean?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"S4S means surfaced on four sides. All four faces are planed smooth, so the timber has square, consistent edges and no rough-sawn surface.\"}},{\"@type\":\"Question\",\"name\":\"Can I bury it in the ground?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. 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":"8 ft","offer_id":67830364864831,"sku":"06063FG408","price":13.2,"currency_code":"CAD","in_stock":true},{"title":"10 ft","offer_id":67830364897599,"sku":"06063FG410","price":16.5,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/4901\/7919\/files\/RoughUtility-GradeFirBeams.png?v=1792615587","url":"https:\/\/griffbuildingsupplies.com\/zh\/products\/6x6-utility-3-green-s4s-fir-dimensional-lumber","provider":"Griff Building Supplies","version":"1.0","type":"link"}