9335-BHGK Fixture Support Box, Round 3-1/2", Bar Hanger Adjustable 16 to 24"

3-1/2" Diameter, Ceiling/Fixture Box with Bar Hanger and Speed Clamps, Thermoset Fiberglass, Depth: 2-7/8". Cubic Inches: 21". Fixture Weight: 50 lbs. Adjustable Bracket Length: 16" - 24"

Machine tapped fixture holes, ground strap, rigid hard box construction, no distortion with high temperatures, shatter resistant with low temperatures, Speed "K" Clamps factory installed