Our 4x2 softwood untreated (CLS) Canadian Lumber Standard Timber (50mm x 100mm) also know as (4 x 2) (50x100) (CLS50100) is a lightweight lumber Ideal for Stud Work & Building Timber Frames, Or Any Project You Might Have Around The Household That You Want To Use Our Timber Supplies For. Finishing Size 38mm x 89mm. (Other Timber Supplies Available)