4 in. Round Cover Flat 15 AMP. Single Receptacle 1-13/32 in. Dia. 4 in. Round Cover Flat 15 AMP. Single Receptacle 1-13/32 in. Dia. General Type: 4 in. Octagonal Boxes T&B UPC: 62253842128 T&B Status: M Material: Steel General Type: 4 in. Octagonal Boxes T&B UPC: 62253842128 T&B Status: M Material: Steel