For construction use Detailed Product Description Materials: Birch, PineGlue: Dynea WBP glueSize: 1)Height:200mm Length: 2500mm, 2900mm, 3300mm, 3360mm, 4500mm, 4900 mm 2).Height:160mm Length: 2500mm, 2900mm, 3300mm, 3360mm, 4500mm, 4900 mm 3)as per your requirement.usuage: as supporting parts