The addition of the flange and cover adds an aesthetic professional appearance and drywall mounting capability.Compatible with the PST, PRO, PLP, MSR, MTR, MWH, MWR, PWR, PNR, PDR, Thinstall, and FUSION wall mounts.Main FeaturesMultiple depth break away edge allows compatibility with standard 3.5" studs & 2.5" studsPre and post construction installation optionsDrywall and stud mountableKnockouts for single gang outlets and 1-1/4", 1", & ?"conduitIntegrated universal zip tie anchor points