Code Electric Products - BOX SCREW COVER WITH KNOCK-OUT NEMA 1 10X10X4"

D Series Are Used As Junction Or Pull Boxes.
Suitable For Indoor Surface Mount Applications. 12 Or 10 Gauge Aluminum.
Concentric Knock Out On 6X6X3 To 12X12X6. Complete With Screw Cover, Four
Mounting Holes And Grounding Provision. Csa