Dynatech New Work Round Ceiling Box with Grounding Product Details Round Ceiling Box with Grounding Material Plastic boxes are made of PPO Certificates ETL Function Plastic boxes for switches and receptacles installed whether that is drywall plaster paneling anything of the nature, wooden construction, etc. Features There are screw holes on the bottom, bar hangers are available to install on the boxes if need extra support and do some adjustment. Multiple Installation Options Enhanced angled nails for easy mounting between wood studs. Two sides have brackets, screw easily mounting at wood studs or steel studs. There are knockouts for installation of ENT fittings on the bottom. Integral clamps to hold the NM cable in place, simply by knocking it loose and the plastic tab puts pressure on the cable to hold it in place relatively secure. Packaging 50pcs for 3", 100pcs for 4"
