Lamson HANGER/CEILING BOX

PVC, 4" diameter x 2-1/4" D., 20 cu. in. For use in new construction. 3/0 - 4/0 combination ceiling box with 14-1/4" to 23-1/2" adjustable bar hanger, 6 integral clamps and fixture spacing for 2-3/4" to 3-1/2". UL listed. No. B620HRUPC: Box No. B620HGRUPC: Box with grounding lug and screw