Our premium 5/4" is just that... graded Premium. In stock are 5/4"X6" decking boards from 8' to 16'.
Our treater uses the MCA process to treat lumber. Check out one supplier, Great Southern Wood Preservers, for more information on the treatment process:
Our in-stock treated lumber boards range from 2X4 to 2X12. Additionally, 4X4 and 6X6 treated timbers are stocked, as well as D-Select 1X4, 1X6, and 1X8 for a beautiful finished railing.