Manufacturer: Extron | Model: MR 100 | Part number: 70-519-12 (also written 7051912)

The Extron MR 100 (70-519-12) is a black 1-gang modular mud ring for installing wall plates without a stud or electrical gang box. It attaches directly to drywall or plaster, and extension kits allow the depth to be adjusted after installation if wall thickness changes. Integrators keep a set of the 1-gang, 2-gang, 3-gang, and 4-gang sizes to cover any opening without reordering mid-project. Black finish; white version is 70-519-13.

Key capabilities

• 1-gang format for Extron decorator-style wall plates, black finish
• Direct drywall mount — no electrical gang box or stud required
• Extension kits (included) allow depth adjustment after installation
• Durable polycarbonate construction
• White version: 70-519-13

Where it is used

Any drywall or plaster wall where a decorator AV wall plate needs to mount cleanly without cutting a full gang box into the wall, including retrofit jobs and open-plan partitions.

Specifications at a glance

• Gang size: 1-gang
• Finish: black
• Material: polycarbonate
• Warranty: 3-year Extron parts and labor

Also referenced as Extron MR100, MR-100, part number 7051912.