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This is the grading agency who graded the lumber.<\/p>\n"},"library":"H5P.Text 1.1","metadata":{"contentType":"Text","license":"U","title":"Untitled Text"},"subContentId":"10a2bd1a-e420-4e41-945c-75b6ed463b41"}],"header":"Grading Agency"},{"position":{"x":9.6,"y":59.11744505494505},"alwaysFullscreen":false,"content":[{"params":{"text":"

This \"2\" is the grade of the lumber.<\/p>\n"},"library":"H5P.Text 1.1","metadata":{"contentType":"Text","license":"U","title":"Untitled Text"},"subContentId":"c4f2fb72-7888-445e-8078-1af02d25f9ea"}],"header":"Grade"},{"position":{"x":44.800000000000004,"y":85.86881868131869},"alwaysFullscreen":false,"content":[{"params":{"text":"

This is the species. \"SPF\" is a group of softwood species, Spruce, Hard Pines (this is a mix of 2 needle pines) and Fir.<\/p>\n"},"library":"H5P.Text 1.1","metadata":{"contentType":"Text","license":"U","title":"Untitled Text"},"subContentId":"1e1d1d32-9d37-4e53-bd8e-501efffdaa37"}],"header":"Species ID"},{"position":{"x":92,"y":63.16964285714286},"alwaysFullscreen":false,"content":[{"params":{"text":"

National Lumber Grader's Association is the authority or standard that this lumber was graded in compliance with.<\/p>\n"},"library":"H5P.Text 1.1","metadata":{"contentType":"Text","license":"U","title":"Untitled Text"},"subContentId":"10cdfd00-1b96-479a-92f7-c10cd803832f"}],"header":"Grading Authority"},{"position":{"x":91.2,"y":45.964972527472526},"alwaysFullscreen":false,"content":[{"params":{"text":"

1\/4\" EE means 1\/4\" Eased Edge. This explains the finshed edge on the board. It has a 1\/4\" rounded edge along the edge of the lumber.<\/p>\n"},"library":"H5P.Text 1.1","metadata":{"contentType":"Text","license":"U","title":"Untitled Text"},"subContentId":"11d59d56-6d32-4d7b-83b6-d84fb8b128d0"}],"header":"Finished Lumber Details"},{"position":{"x":75.2,"y":11.401098901098901},"alwaysFullscreen":false,"content":[{"params":{"text":"

This is the mill number. Each mill has a designated ID number to track where this lumber came from. This is especially important when tracking chain of custody and for ensuring compliance with forest stewardship certification such as FSC Certified Forests.<\/p>\n"},"library":"H5P.Text 1.1","metadata":{"contentType":"Text","license":"U","title":"Untitled Text"},"subContentId":"d67caa9f-cd56-4c50-a6ea-75ce939d8b6a"}],"header":"Mill Number"},{"position":{"x":54.800000000000004,"y":11.341002747252746},"alwaysFullscreen":false,"content":[{"params":{"text":"

KD-HT refers to the moisture content. This acronym means Kiln Dried and Heat Treated. This actually tells us 2 things, it has been dried in a kiln, generally to 6-8% moisture content. It has also been Heat Treated. This is to kill any insects or parasites that may have been in the lumber, to avoide the risk of spreading to different regions during transportation.<\/p>\n"},"library":"H5P.Text 1.1","metadata":{"contentType":"Text","license":"U","title":"Untitled Text"},"subContentId":"708040e2-a35d-4a0c-9ae6-f643e8879fca"}],"header":"Moisture Content"}],"hotspotNumberLabel":"Hotspot #num","closeButtonLabel":"Close","image":{"path":"images\/image-62055397510da.jpg","mime":"image\/jpeg","copyright":{"license":"U"},"width":766,"height":544},"backgroundImageAltText":"An image of a softwood lumber stamp on a 2x6 SPF board."}

Interpreting a Softwood Lumber Grading Stamp

Tom Mikel