Extron MR 500 (part number 70-519-53) — a 5-gang modular mud ring in white, for surface-mounting MediaLink controllers and architectural interfaces.

Studs and electrical gang boxes dictate where a lot of low-voltage hardware ends up on a wall, which rarely matches where an integrator actually wants a controller or interface plate. The MR 500 sidesteps that by clamping straight into a cut opening in drywall or a similar panel — no backing structure required — so placement is set by cable routing and sightlines instead of framing. It ships preassembled at 5-gang capacity with a matching expansion kit in the box, letting the same bracket grow to the next size in the field if a project's device count changes after the cutout is already made.

Key Capabilities

• Mounts without studs or electrical gang boxes for flexible placement
• Preassembled at 5-gang capacity, white finish
• Fits hollow wall thickness from 1/4 in (0.63 cm) to 1 in (2.5 cm)
• Includes expansion kit for in-field resizing to the next gang size
• UL-listed for Class 2 low-voltage applications
• High-impact polycarbonate construction

Where It Is Used

New-build and retrofit conference rooms, classrooms and huddle spaces where a MediaLink controller or architectural interface has to land at a specific wall position that does not line up with existing studs or a pre-run electrical box.

Specifications at a Glance

• Model: Extron MR 500, part number 70-519-53 (5-Gang, White)
• Wall thickness range: 1/4 in (0.63 cm) to 1 in (2.5 cm)
• Material: high-impact polycarbonate
• Listing: UL-listed for Class 2 low-voltage use only

Also referenced as Extron MR500, MR-500, part number 7051953.