Middle Atlantic 125CRR 1-1/4 In. Conduit Reducing Ring
Overview
The Middle Atlantic 125CRR is a 1-1/4 inch conduit reducing ring designed to seal and finish conduit entry points on rack enclosures and cable management panels. Where a standard knockout is sized for a larger conduit but the run calls for 1-1/4 in. trade-size conduit, the 125CRR fills the gap — eliminating an unsightly opening, blocking airborne particulates from entering the enclosure, and providing a clean, finished look in finished equipment rooms and telecom closets. This is the part that prevents a sloppy install from becoming a dust ingress or EMI problem later.
Compatibility
The 125CRR is compatible with Middle Atlantic rack enclosures and cable management accessories that feature standard knockout openings sized to accept a 1-1/4 in. conduit reducing ring. This includes Middle Atlantic's rack enclosure product lines — including the ERK, BGR, and PD series cabinets — wherever conduit entry knockouts are present. Verify the knockout diameter on your specific enclosure before ordering; the 125CRR seats a 1-1/4 in. trade-size conduit, not a 1-1/2 in. or 2 in. entry.
Installation Notes
Snap or press the reducing ring into the knockout opening from the exterior of the enclosure panel. Confirm the knockout diameter matches the outer flange of the 125CRR before installation — forcing an oversized or undersized ring risks cracking the ring or leaving an unsealed gap. No tools are required for standard snap-fit knockouts. For cable management installations requiring a fully sealed conduit entry, pair with an appropriate conduit connector and rack accessories such as bushings or locknuts to secure the conduit stub to the panel.
