Middle Atlantic Core Hole Plug 3IN - ABPLUG3

Middle Atlantic ABPLUG3 Core Hole Plug 3 IN

Overview

The Middle Atlantic ABPLUG3 is a 3-inch core hole plug designed to seal unused cable pass-through cutouts in rack enclosures and furniture panels. In structured wiring and AV/security rack installations, unused core holes are a common source of airflow bypass — hot exhaust recirculates into the intake path and shortens equipment life. The ABPLUG3 closes that gap, keeping cold air routed through the equipment and hot air exhausted properly. It also satisfies basic physical security requirements by preventing access to enclosure internals through open cutouts. Drop it into any 3-inch core hole opening wherever a cable route was pre-cut but left unused.

Compatibility

The ABPLUG3 is sized for standard 3-inch core hole cutouts as commonly found in Middle Atlantic rack enclosures, furniture, and credenzas — including the BGR, BGRT, BGRX, BGRXT, and L-series cabinet lines that use pre-punched core hole positions for cable management. It is also compatible with any third-party rack furniture or structured cabling panels cut to the same 3-inch diameter. Verify the cutout diameter before ordering — Middle Atlantic offers plug variants for other diameters in the same rack accessories family; the ABPLUG3 covers only the 3-inch opening.

Installation Notes

Installation is tool-free: the plug snaps or press-fits into the cutout from the front face of the panel. No fasteners or adhesive are required. Confirm panel thickness falls within the plug's retention clip range — panels outside that range may not hold the plug flush. For cable management planning in high-density rack builds, account for the plug when finalizing cable routes; removing it after cables are dressed is straightforward but easier to plan ahead.