Mud Ring — Single Gang, Post-Drywall (Swivel Tabs) Low-Voltage Trim Ring • Single-Gang • Post-Drywall Retrofit • Swivel Tab Clamps This single-gang post-drywall mud ring provides a solid, finished mounting edge for low-voltage wall plates after sheetrock is already installed. Built with swivel tabs, the ring clamps securely to the back side of the drywall—no stud access required—making it ideal for retrofit network/phone/coax drops, tenant improvements, and clean rework where you want a professional result without opening the wall. Common uses Retrofit low-voltage drops — add terminations after paint/drywall is complete. Secure wall-plate mounting — prevents flexing and keeps plates tight to the wall. Tenant improvements — fast adds for offices, POS, and conference rooms. Repairs & rework — reinforces openings where drywall edges are weak or chipped. Hardware Kits Jacks Specification Detail Type Mud ring / low-voltage trim ring Gang Size Single gang Installation Stage Post-drywall (retrofit) Retention Swivel tabs clamp to drywall from behind Mounting Provides mounting edge for standard single-gang low-voltage wall plates Application Data/voice/coax/AV low-voltage terminations Why buy from Gruber Fast retrofit installs — secure clamping without opening the wall. Cleaner finishes — rigid wall-plate mounting with less flex and gap. Jobsite-ready staple — a small part that prevents sloppy terminations.
