Peerless ACC556 Cathedral Ceiling Adapter, White Compatible with: JM630, JM640, JM640D, JM650, JM650D, JM655, JM660, JM665, JM670, JM675 Jumbo Mounts Color: White Contains a 1 1/2 - 11.5 NPT threaded fitting to accept a Peerless flush mount tube or extension column.