Electrical Box Cover, 1-Unit, 1 Outlets, 2-9/16 in Dia, 101.6 mm Length, 101.6 mm Width, Square, Ceiling, Wall Mount, 4.6 cu-in, Steel, Silver, Standards/Approvals: CSA 5043 Certified, Applications: For 2-9/64 in Dia 30 A single receptacle