Tecsteel window wells are fabricated from corrosion resistant G-90 galvanized steel. Window well corrugation have a circular arc with 2″(50mm) pitch and 0.5″ (12.5mm) depth. Window wells have a 0.5″(12.5mm) safety lip on top which also give added strength. Every window well has a 2″(50mm) flange on each side for attachment to the wall.