JR Products 22D32-A Large 30/50 Amp Thumb Lock Electric Cable Hatch, Polar White Accepts both 30 and 50 Amp cord UV and impact resistant, resists road salts and acids Cutout Dimensions: 6-7/8" H x 6-3/8" W Outside Dimensions: 8-1/2" H x 8" W Collar Depth: 1-1/8"