24390 - Fabricated structural wood products
2439031 - - Members for Heavy timber construction: Glued laminated lumber
2439033 - - Members for Heavy timber construction: Sawn lumber
2439035 - - Members for Heavy timber construction: Combination of Glued, Laminated & Sawn lumber
2439051 - - Members for Heavy timber construction: Roof trusses made of Sawn lumber, Light construction
2439098 - - Fabricated structural wood products (General)
2439XX0 - - Structural wood members (Miscellaneous - Volume)
2439XX2 - - Structural wood members (Miscellaneous - Speciality)