JR Products Polar White 5-7/8"RO Square Lockable Electrical Hatch Access Door E7132-A 19-0205

4-3/4 Inch Height x 5-7/8 Inch Width Cutout Dimension, 6-1/2 Inch Height x 7-5/8 Inch Width x 1-1/8 Inch Collar Depth. It accepts up to 30A/ 50A cords. Open back for a variety of uses & a shallow collar for thin wall mounting.