4 in square 5/8 in 1-gang Device Ring are used with 4in square boxes to mount switches, receptacles and devices. Their angled slots on the covers compensate for up to 12 deg of box misalignment on upright framing members. GARVIN® Device Ring, 1-Gang Square, 4 in Length, 4 in Width, 0.06 in Thickness, 5/8 in Raised, Steel, Galvanized