B520P-UPC 4" Round Ceiling Box, Nail-On, 2-1/4" Deep, Non-Metallic

4 Inch Round Ceiling Box, Nail-On, 2-1/4 Inch Deep, Cubic Inches: 20, 6 Integral Clamps, Fixture Spacing For 2-3/4 Inch and 3-1/2 Inch, Non-Metallic

Suitable for fixture support up to 50 lbs. Ceiling Box, Volume 20 Cubic Inches, Diameter 4 Inches, Depth 2-1/4 Inches, Color Blue, Material Polycarbonate, Mounting Means Captive Nails, with Ground Lug and Screw Attached