Replacement round Orbix hatch for Wilderness Systems kayaks from 2015 to current. Comes with improved rubber deck to kayak interface, lid gaskets and mounting screws. A bucket option is available. Hatch cover closes with a lockable latch and seals water tight. Outside diameter is approximately 9 7/16 inches. The working opening (LID) is approximately 7 1/4 inches. Deck cut-out approximately 8 1/4 inches. Eight screw holes, approximately 9 inches from center to center of opposite holes. Mounting hardware included.