• Features
4 IN Square Flat Blank Cover
Boxes with concentric or eccentric knockouts are suitable for bonding without any additional bonding means where used in circuits above or below 250 VAC
Unless otherwise noted all concentric or eccentric knockouts are 1/2 - 3/4 in combinations
Single and 2-gang metallic outlet and switch boxes are acceptable for use in two-hour fire rated walls
Groundskeeper raised ground feature on boss inside box provides one or two #10-32 tapped hole, allowing a 3/8 in long green ground screw to be threaded into box without contacting mounting surface
Other boxes provided with flat ground tapped hole except plenum boxes
Single device
Plaster rings/mud rings