The NESCO 4-11/16" Square Blank Cover is designed to seal unused electrical boxes cleanly and securely, keeping out dust, moisture, and debris on any dry-location job site. Its precise fit ensures a professional finish on rough-in work, making it a reliable choice for electricians who need a dependable, code-compliant solution. Lightweight yet durable, it installs quickly and holds up in demanding commercial and residential applications.

Specifications