5/4″ x 4″ S4S kiln dried Appearance grade Alaskan yellow cedar Decking. Outperforms other lumber types including pressure treated for outdoor use, even buried in the ground. Appearance grade means small tight knots and a fair amount of clear, knot free wood. Smooth nominal dimension. Use as is for any outdoor use including decks, arbors, pergolas even in the dirt. 8–20′, Always check for available lengths.