OSB Grade Stamps

To identify the performance level of Weyerhaeuser OSB panels, grade stamps are provided on one face of every panel. The stamp contains panel grade, allowable span ratings for various applications, installation info, applicable manufacturing standards, and the certifying agency. For information on reading Weyerhaeuser OSB grade stamps click on links below. 


How to read grade stamp - osb 4204

How to read grade stamp - osb 4204 Spanish 

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