Made from a glass filled polypropylene, for strength and durability. Designed for heavy traffic areas and will withstand people walking or standing upon them. Easy close slam latch forms a weather tight seal just by closing the hatch. Hatch also utilize a patented integral hinge assembly that allows for easy lid removal. The beveled and skirted lid covers all fasteners for a clean look above or below decks. The perfect choice for easy dry storage, access to bait or fish wells, or electrical and plumbing lines. Fasteners: 12ea. #12 pan head self tapping screws (not included). ID 9-3/8" x 19-1/2" OD 13" x 23-1/4" Cut Out 10-3/4" x 20-3/4" Color White