**WHILE SUPPLIES LAST This hatch is made of durable polypropylene for lasting use. Available in white, colonial white, and beige with no metal parts to rust or corrode. They make a cost effective option to replacing hatches. For use with a 30 Amp cord only. Cut Out Dimension: 2-27/32" Dia. Outside Dimension: 4-5/16" H x 3-7/8" W