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Middle Atlantic EFB45BTBZTR Evolution Series Flush Floor Box Cover with Solid Lid

Overview

The Middle Atlantic EFB45BTBZTR is a flush-mount solid lid cover for the Evolution Series EFB45 raised floor box — the finishing piece that closes out an AV or security floor-box installation cleanly and securely. At 9.94 inches wide and 1.19 inches in profile height, it sits nearly flush with the floor surface, eliminating trip hazards in open-plan offices, boardrooms, conference centers, and access-controlled lobbies. The bronze finish integrates with commercial flooring palettes where standard black or grey covers would stand out. If you're specifying Middle Atlantic floor infrastructure for a raised-floor AV or security deployment, this cover completes the assembly with the right tamper deterrent and aesthetic match.

Key Features

• Flush Cover Style: The flush lid sits level with the surrounding floor surface — no raised lip to catch foot traffic or rolling equipment. In high-pedestrian areas like lobbies or trading floors, that 1.19-inch overall height keeps the assembly as unobtrusive as the floor allows.
• Tamper-Resistant Receptacle Type: Tamper-resistant designation means the outlet positions are mechanically blocked from single-prong probing — relevant in any space with public access or unsupervised after-hours entry. For floor box deployments in schools, healthcare waiting areas, or government facilities, this is typically a code requirement, not just a preference.
• Bronze Finish (9.94 in / 25.2 cm Wide): The 9.94-inch width matches the EFB45 box footprint directly. Bronze reads neutral against hardwood, stone tile, and most commercial carpet borders — useful when the integrator needs the floor box to disappear rather than draw attention in a boardroom or executive suite.
• Low-Profile at 1.19 Inches (3 cm): The 1.19-inch height is the combined stack of cover plus any floor-level clearance. Specify this against your raised floor panel cutout depth early — covers that sit proud of the panel surface create their own trip hazard.
• TAA Compliance Status — Not Applicable: The EFB45BTBZTR is confirmed TAA Non-Compliant. If your project is a federal government installation requiring TAA-compliant components throughout, verify your floor box cover specification against the applicable contract requirements before ordering.

Integration & Compatibility

The EFB45BTBZTR is designed as the cover assembly for the Middle Atlantic Evolution Series EFB45 raised floor box. Confirm the base box model in your rack and enclosure infrastructure bill of materials before ordering — cover and box must be matched within the EFB45 family for correct fit and receptacle alignment. This cover does not retrofit to other manufacturers' floor boxes or to older Middle Atlantic floor box generations outside the Evolution Series. For structured cabling and floor-box power planning, cross-reference your power distribution layout to confirm outlet count and circuit loading before the cover is installed, since access to the box interior requires removing the cover.

Frequently Asked Questions

Q: What floor box does the EFB45BTBZTR cover fit?

A: The EFB45BTBZTR is the cover for the Middle Atlantic Evolution Series EFB45 raised floor box. It is not a universal cover — it must be matched to the EFB45 base unit within the Evolution Series.

Q: Is the EFB45BTBZTR TAA compliant?

A: No. The EFB45BTBZTR is confirmed TAA Non-Compliant. Federal projects with TAA requirements should verify whether this component falls under the applicable contract scope before specifying.

Q: What does the tamper-resistant receptacle designation mean on this cover?

A: Tamper-resistant outlets have internal shutters that require simultaneous insertion of both prongs to open — they resist single-object insertion attempts. This is a standard code requirement in schools, healthcare, and many commercial occupancies under NEC 406.12.

Q: What are the dimensions of the EFB45BTBZTR?

A: Width is 9.94 inches (25.2 cm) and height (cover profile) is 1.19 inches (3 cm). Confirm these against your raised floor panel cutout before installation.

Q: Does the bronze finish match other Middle Atlantic Evolution Series components?

A: The bronze finish is specific to this SKU within the EFB45 cover lineup. Verify finish availability across any other Evolution Series covers in your specification to ensure a consistent appearance across the floor plate.

Jerry Tildsen

The EFB45BTBZTR is a detail item that integrators sometimes spec last and regret first — the 9.94-inch width and flush cover style are fixed by the EFB45 box footprint, so if you're mid-install and discover the cover doesn't sit flush due to floor panel thickness variance, you're pulling the box. Get the floor panel cutout depth confirmed against that 1.19-inch cover height before the box goes in.

Technical Highlights:

• Flush Cover Style: Zero lip above floor grade when installed correctly — critical in rolling-cart AV environments and ADA-sensitive commercial spaces where raised covers create compliance exposure.
• Tamper-Resistant Receptacles: Mechanical shutter design satisfies NEC 406.12 tamper-resistance requirements in occupancies where that code section applies — saves a separate inspection callback on healthcare or education projects.
• 9.94-inch (25.2 cm) Width: Sized specifically to the EFB45 box — not adjustable, not adaptable. Cross-check the box model number on the BOM before the cover ships; wrong-box returns on trim hardware are an avoidable delay.

Deployment Considerations:

• TAA Non-Compliant status is confirmed — flag this early on any GSA schedule, federal, or DoD project where floor infrastructure components fall under the TAA clause; substituting after RFI is more expensive than pre-bid verification.
• Bronze is a single-finish SKU — if the project spec calls for black or stainless across the floor plate, this cover requires a separate color-match order; verify the full EFB45 cover color lineup against finish requirements before the order closes.

Best fit: corporate boardrooms, conference centers, and higher-education AV installs on raised access flooring where the floor box needs to disappear into a premium finish palette and tamper resistance is either a code requirement or a client expectation.