CLT used in US construction projects typically must comply with ANSI/APA PRG 320, the standard for performance-rated cross-laminated timber, which governs species, adhesive, and structural performance requirements. While compliance with PRG 320 is a market requirement rather than a customs admissibility condition, buyers and specifiers routinely require third-party certification (such as APA or equivalent) as a condition of purchase. Importers should confirm that foreign manufacturers hold current certification before contracting.

The scope of US softwood lumber AD/CVD orders is defined by species and product form. CLT panels made from covered Canadian softwood species could potentially be argued within scope, though CLT has not historically been a primary focus of those proceedings. Importers of Canadian CLT should seek a formal scope ruling from the Department of Commerce or consult a licensed customs broker to assess current exposure before importation.