5 4 6 16 treated lumber July 8, 2019 16 32 64 128 5 4 6 16 pressure treated lumber 5 4 x 6 x 16 pressure treated lumber 5 4 x 6 x 16 sienna pressure treated lumber 5 4 x 6 5/4-in x 6-in x 16-ft standard wood pressure treated lumber deck board