Middle Atlantic EVO 68GNG Flrbx KO PLT - EFB810-3/4-3/4

Middle Atlantic EFB810-3/4-3/4 EVO Floor Box Knockout Plate

Overview

The EFB810-3/4-3/4 is a knockout plate designed for Middle Atlantic EVO series floor boxes, providing a pre-punched 3/4-inch conduit entry point. Floor box builds in AV, security, and structured cabling installations routinely require field-defined conduit routing — this plate replaces a blank panel position to accept 3/4-inch conduit, keeping the enclosure sealed around the penetration and maintaining the clean, finished appearance the EVO floor box line is known for. It is the correct part when your conduit run terminates at an EVO floor box and the existing knockout configuration does not match your layout.

Compatibility

Designed for use with Middle Atlantic EVO series floor boxes — specifically the EFB810 family. Verify your floor box model number against the EVO floor box accessories catalog before ordering; Middle Atlantic's EVO and non-EVO floor box lines use distinct hardware that is not interchangeable. The 3/4-inch knockout size is standard for 3/4-inch EMT or flex conduit terminations, which are common in commercial low-voltage and power distribution rough-ins. If your conduit run is 1/2-inch or 1-inch, a different knockout plate size is required — do not force-fit an incorrect size, as it will compromise the enclosure seal and may violate local code.

Installation Notes

Install into the designated knockout position on the EVO floor box body. Confirm conduit diameter before ordering — the EVO floor box accessories line includes multiple knockout sizes and blank plates; selecting the correct size at the order stage avoids a return. Follow Middle Atlantic's installation guide for the EFB810 series and applicable local electrical and low-voltage codes for conduit termination at floor-level enclosures. For full cable management planning in an EVO floor box deployment, cross-reference the complete EFB810 accessory set.