Middle Atlantic EFB8S 8-Gang Steel Floor Box
Overview
The Middle Atlantic EFB8S is a steel, above-grade floor box designed for structured wiring deployments where you need a durable, code-compliant outlet and connectivity hub flush-mounted into raised or above-grade flooring. The EFB8S provides 8 gangs of configurable space — enough to mix power, low-voltage, A/V, and data inserts in a single footprint, eliminating the need for separate floor penetrations across a conference room, operations center, or open-plan workspace. TAA compliance makes it a straightforward procurement choice for federal facilities and government-funded projects.
Compatibility
The EFB8S is part of Middle Atlantic's Middle Atlantic Evolution Series floor box line. It accepts standard single- and multi-gang inserts from the Evolution Series, supporting combinations of Decora-style receptacles, keystone jacks, HDMI/USB pass-throughs, and brush-entry plates. Designed for above-grade installation — suitable for raised access flooring systems and on-slab applications where the box sits above the finished floor surface. Verify insert compatibility against the Evolution Series insert catalog before ordering, as low-voltage and power insert counts depend on local electrical code and specific floor box configuration.
Installation Notes
Footprint is 12.75 in wide × 16.13 in deep × 6 in tall — plan rough-in cutout dimensions accordingly, as the 6 in height requires adequate sub-floor or slab clearance beneath the finished surface. Above-grade grade type means this box is not rated for below-grade or in-ground burial; do not install in applications subject to water infiltration from below. Steel construction handles the floor box load ratings typical of commercial foot-traffic environments. Confirm local electrical code requirements for fill capacity across the 8 available gangs before finalizing insert selection — mixed power/data configurations in a single enclosure are subject to separation requirements in most jurisdictions.
