9351-NGK 4" Round Ceiling/Fixture Box, Depth: 2-7/16", Nail-On, Non-Metallic

4" Diameter, Nail-On, Ceiling/Fixture Box with Speed Clamps, Thermoset Fiberglass, Depth: 2-3/8". Cubic Inches: 22.5". Fixture Weight: 50 lbs. Includes: Angled Nails

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