RACORound Floor Box Cover Kit with two Lift Lids - For Use with 5511 Floor Box - Solid Brass

Hubbell-Raco RAC5500KIT Round Floor Box Kit Device Cover, Duplex, Solid Brass

Hubbell Floor Box Adapter Ring Wiring Device 34247 Floor Box Adapter Ring

RACO 6244 Round Floor Box Non-Metallic Adapter Ring, Gray Finish