{"product_id":"3x3-mill-run-spf-green-rough-dimensional-lumber","title":"3\" x 3\" Mill Run SPF Green Rough Dimensional Lumber, 8'","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\u003e3\" x 3\" Mill Run SPF Green Rough Dimensional Lumber\u003c\/h2\u003e\n\u003cdiv class=\"pb-intro\"\u003e\n\u003cp\u003eThis is a 3x3 in mill run SPF (spruce-pine-fir), sold green and rough sawn. It comes in an 8 ft length for stakes, bracing, forming and general-purpose work.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMill run means it is not sorted to a specific grade, and green rough means it is not dried or planed.\u003c\/strong\u003e Expect a mix of quality with knots and other defects, and do not use it as a structural post or beam. It also still holds moisture, so it shrinks and can check or twist as it dries, and the finished size varies from piece to piece. Check the size against your layout and hardware before you order.\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\u003eMill run SPF, a low-cost option where a specific grade is not required\u003c\/li\u003e\n\u003cli\u003eSPF is a species group of spruce, pine and fir, light in weight and easy to cut and nail\u003c\/li\u003e\n\u003cli\u003eGreen, with a moisture content above 19%, so it is soft to cut and drill\u003c\/li\u003e\n\u003cli\u003eRough sawn, keeping the texture left by the sawmill\u003c\/li\u003e\n\u003cli\u003eNot pressure treated, so keep it dry and out of ground contact\u003c\/li\u003e\n\u003cli\u003eA 3 in. nominal square section in an 8 ft length\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCommonly used for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStakes, cribbing and blocking\u003c\/li\u003e\n\u003cli\u003eConcrete forming, shoring and bracing\u003c\/li\u003e\n\u003cli\u003eGarden and landscape projects above ground\u003c\/li\u003e\n\u003cli\u003ePallet, crate and equipment framing\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\u003e3x3 Mill Run SPF, Green, Rough\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSpecies\u003c\/th\u003e\n\u003ctd\u003eSPF (spruce-pine-fir)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGrade\u003c\/th\u003e\n\u003ctd\u003eMill run (not graded to a specific grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eNominal size\u003c\/th\u003e\n\u003ctd\u003e3 in. x 3 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAvailable length\u003c\/th\u003e\n\u003ctd\u003e8 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\"\u003eSurface\u003c\/th\u003e\n\u003ctd\u003eRough sawn, not planed\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\"\u003eRough-sawn timber is not milled to a fixed finished size, so actual thickness and width vary by piece and by sawmill. Mill run stock is not sorted to a grade and is not rated for structural use, so confirm suitability with your engineer or building inspector. Green lumber changes size as it dries.\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 mill run mean?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eMill run means the lumber is taken as it comes from the mill and is not sorted into a specific grade. It can include a mix of quality, with more knots and defects than graded stock, so it suits jobs where price matters more than strength or appearance.\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 rough 3x3?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eIt varies. A rough-sawn 3x3 is not planed to a set finished size, so the actual thickness and width differ from piece to piece. A planed 3x3 measures 3-1\/2 in. square when dry. Contact us if a specific dimension matters for your project.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pb-acc pb-q\"\u003e\u003csummary\u003eWhat is SPF?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eSPF is a commercial species group of spruce, pine and fir. The wood is light and easy to work, and it is graded and sold together as one group.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pb-acc pb-q\"\u003e\u003csummary\u003eWhat does green rough mean?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eGreen means the timber has not been kiln dried and holds moisture above 19%. Rough means it is sawn but not planed, so the surface keeps its sawmill texture. Expect shrinkage as it dries.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pb-acc pb-q\"\u003e\u003csummary\u003eCan I use it for structural posts?\u003c\/summary\u003e\u003cdiv class=\"pb-body\"\u003e\u003cp\u003eNo. Mill run stock is not graded or rated for structural use. Use a graded #2 and better post for decks, porches and carports, and confirm the requirement with your building inspector.\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\/3x3-mill-run-spf-green-rough-dimensional-lumber#product\",\"name\":\"3\\\" x 3\\\" Mill Run SPF Green Rough Dimensional Lumber\",\"url\":\"https:\/\/griffbuildingsupplies.com\/products\/3x3-mill-run-spf-green-rough-dimensional-lumber\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Griff\"},\"category\":\"Hardware \u003e Building Materials \u003e Lumber \u0026 Sheet Stock\",\"description\":\"3x3 mill run SPF timber, green and rough sawn. An economy square size for stakes, forming and general work. 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