Arlington 1632-N Low Voltage Nail-On Mounting Bracket, 4-Gang Overall Dimensions - 2.625"L x 9.75"W x 5.34"H, Nailing Flange Thickness - 0.090" (Front and Side), Panel Cut Out Dimensions - 7.75" W x 3.60" H, Gang: 4 Gang. Shallow Mount - Only 0.80" Deep (Not Including Stud Side Nail Flange), Minimum Sheetrock or Panel Thickness - 0.45", Side Wall Thickness - 0.080" Four Gang Open Back Bracket. Commonly Referred to as a Mud Ring. For New Construction Applications. Run More Wire Easier with Brackets vs Boxes. Mounts to Wood Studs with Supplied Nails. Impact Resistant Plastic results in less breakage on Job site. Flange around box supports sheetrock.