Middle Atlantic 817C Brass CPT Single-Gang Concrete Floor Box Flange
Overview
The Middle Atlantic 817C is a brass CPT flange designed for single-gang concrete floor box installations. At 5 in wide, 6 in deep, and just 0.75 in in height profile above the floor surface, the 817C provides a low-profile, durable interface between a poured or finished concrete floor and a single-gang outlet or device module — the kind of detail that matters on AV-equipped conference rooms, training floors, and integration racks where floor boxes must sit flush and handle daily foot traffic without shifting or cracking the surrounding surface.
Compatibility
The 817C is engineered for use with Middle Atlantic concrete floor box systems requiring a single-gang flange with CPT (carpet) brass trim. It fits the standard single-gang floor box rough-in footprint within the Middle Atlantic floor box product family. Verify your floor box series accepts a CPT flange before ordering — some series use separate flange SKUs for hard floor versus carpet finished surfaces.
Installation Notes
At 0.75 in finished height, the flange is intended to sit flush or near-flush once set into the concrete floor box rough-in opening. The 5 in × 6 in footprint must align with the floor box collar during pour or after core-out — confirm rough-in dimensions match before installation. Brass construction resists corrosion in below-grade or moisture-present slab environments. TAA compliance is not applicable to this SKU.
