The NESCO 52C3 square box cover bridges 4" x 4" electrical boxes to round-mounted components with a centred 3" knockout opening, making it a reliable choice for conduit entries, lighting fixtures, and ceiling fan installations. Its 5/8" raised profile provides the clearance needed for clean, code-compliant terminations in dry-location residential and commercial applications. A straightforward, durable solution that saves time on rough-in and finish work alike.

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