Wiremold 2337A Wire Ducting & Raceways NM ROUND BOX E XT 2300 WHITE
Wiremold WM 2337A: Round Box Extension- For hanging fixtures, smoke/fire alarms and other security devices with 3.5" [89mm] or 4-1/16" [103mm] mounting centers. 5.5" [140mm] diameter with open base. Not for use with fans.
