Flo-N-Gro’s line of Premium ID (Inside Dimension) Trays are built to provide top-quality performance for your growing needs. Extra thick, heavy-duty, premium, long-lasting plastic trays feature an easy-to-clean square pattern that also drains more easily. The 3 ft x 6 ft and 4 ft x 6 ft models feature 5 mm material thickness. Built for rigorous use, the trays feature heavy-duty design qualities that include gusseting in all necessary areas. Made with a proprietary blend of premium material. Manufactured in North America.