Features. Provides a central ground point to protect people and equipment from harm. Heavyweight copper or copper alloy provides the best grounding performance. Includes insulators and standoff brackets. Mounts on the wall to provide a central ground point for equipment. Provides a 2 -3/4-" standoff from wall. Has -7/16-" diameter lug holes. Accommodates -3/4-", 1-", and 1 -3/4-" center-to-center spaced two lug holes. Constructed of electrolytic, tough-pitch, 110-alloy copper bar. Insulators are constructed of glass-reinforced thermoset polyester. Includes insulators and standoff brackets- does NOT include -3/8-" wallmounting hardware Note. Effective grounding ensures continuity. Be sure to use an appropriate grounding system as required by your installation Specifications. No. of Holes: 15. Size: 12 in. Weight: 5.06 lbs