Cantex EZ20CN

4" Diameter, Nail-On, Ceiling/Fixture Box, Non-Metallic. Depth: 2-3/8". Cubic Inches: 20". Fixture Weight: 50 lbs. Includes: Nails, Clamps. Material: Polycarbonate Depth: 2 3/8 in Mounting: Clamp Color: Black Mounting: Nail On Material: Polycarbonate Cubic Inches: 20 in?