Carlon A471RR Plaster Ring 4 in Dia 1/2 in L 4 in W Round 1 -Gang PVC Blue

Carlon Plaster Ring, Round Shape, 1 Gangs, PVC, Blue, 1/2 in Length, 4 in Width, 4 in Height, 4 in Diameter, Screw-On Mounting, Suitable for: Non-Metallic Box, Octagonal Ceiling Boxes