Middle Atlantic Brass CPT FL 3-GANG Ombx - 837C

Middle Atlantic 837C 3-Gang Brass Carpet Flange for Concrete Floor Boxes

Overview

The Middle Atlantic 837C is a brass carpet flange designed for 3-gang concrete floor box installations where a finished, professional trim edge is required at the floor level. At 6 in wide and 13.25 in deep with a 0.75 in profile height, the 837C sits flush against carpet or finished flooring surfaces to provide a clean transition between the floor box opening and the surrounding surface — eliminating the raw concrete-edge look common in unfinished AV and data infrastructure rough-ins. This is the right part when your floor box installation requires a decorative and protective perimeter flange rather than leaving the box rim exposed. Part of the Middle Atlantic floor box accessory line, the 837C is a finishing component — not an enclosure — and is sized specifically for the 3-gang configuration.

Compatibility

The 837C is compatible with Middle Atlantic 3-gang concrete floor box systems requiring a brass carpet flange finish trim. Verify your floor box is a 3-gang concrete-pour model and that the rough-in opening matches the 6 in width and 13.25 in depth footprint before ordering — flange dimensions must correspond to the installed box frame. This flange is intended for carpet or low-pile flooring environments; verify suitability for tile or hardwood finished floors based on your specific installation conditions. TAA compliance is not applicable to this SKU, so confirm procurement requirements accordingly if operating under TAA-restricted contracts.

Installation Notes

The 0.75 in height profile is the critical dimension for flush-mount fit — confirm available clearance between the top of your installed floor box frame and the finished floor surface before specifying the 837C. Installations where the box sits high relative to the finished floor level may require adjustment before the flange seats correctly. No power, cabling, or conduit connections are made at this component; it is a mechanical trim piece only. Consult the AV infrastructure accessories category for compatible inserts, cover plates, and associated hardware.