Allied Moulded FiberglassBOX 9350-BHK Ceiling Box, Thermoset Fiberglass

Four inch round ceiling box with universal bar hanger, adjustable bar assembly from 16 to 24 in. 4 in Dia x 2-7/16 in D. Speed clamps, 50 lb. fixture rated. 2 hrs wall and ceiling fire rated, UL listed.