9335-NK Ceiling/Fixture Box, Round, 3-1/2" Diameter , 2-7/8" Deep, Non-Metallic

Ceiling/Fixture Box, Round, 3-1/2 Inch Diameter , 2-7/8 Inch Deep, Nail-On Type, 3/0 AWG Speed Clamps, 20.500 Cubic Inches, Thermoset Fiberglass, Cubic Inches: 20.5"

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