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Electrical Boxes 101 - Lighting, Ceiling Fan, Junction Boxes

By Bob Formisano, About.com

7 of 9

Square, Octagon and Round Box Covers

Different Covers Provide Multiple Use Opportunities

© Home-Cost.com 2007

SQUARE, OCTAGON AND ROUND BOX COVERS

Usage:

  • Covers are used to close an outlet box and are required by code. Never leave a box uncovered.
  • Switches or receptacles may be installed into square or octagon boxes by using covers with cutouts;
  • Octagon or round covers are used for mounting light fixtures;
  • Raised 4” square covers are used for mounting switches or receptacles;
  • Flat round closure plates (5”) are designed for use in dry locations to close unused ceiling outlets.

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