Made from .020 aircraft aluminum. Patterned from the forward bombardier/navigator escape hatch of a B-17 Flying Fortress. Measures 26" square. Ready for your custom art, if you choose. These panels are hand crafted by our B-17E restoration crew. Made in the USA. In the iconic movie Twelve O'Clock High, starring Gregory Peck, you might remember the cockpit crew famously pulling themselves on-board the aircraft, feet first, through this hatch.