Tinted Lexan Cast Aluminum Almag-35 Support bars under Lexan Standard in black finish Option of white finish Double opening/Lazarette or Inside/Outside opening available on some models Aluminum and stainless-steel hardware Hole Cutout: 19-3/4" x 20-1/8" Deck Flange OD: 22-1/8" x 22-1/8" Lid OD: 22" x 22" Number of Dogs: 2