10Pcs Octagon Electrical Box Cover - Galvanized Steel Cover with 1/2 Inch Knockout for 4 Inch Octagon/Round/Square Boxes

10Pcs Octagon Electrical Box Cover - Galvanized Steel Cover with 1/2 Inch Knockout for 4 Inch Octagon/Round/Square Boxes

• 10-Piece Value Pack：Adequate quantity for bulk construction, maintenance and replacement of octagon electrical box covers. Cost-effective for electrician projects, home and commercial renovations.
• Galvanized Steel Material：High-hardness galvanized steel for octagon box covers ensures rust & corrosion resistance, ideal for damp or concealed installations with longer service life.
• 1/2 Inch Standard Knockout：Fits mainstream wire pipes and accessories for 4-inch electrical boxes perfectly, no extra drilling required to simplify installation and boost efficiency.
• Multi-Box Compatibility：Compatible with 4-inch octagon, round and square electrical boxes, replacing single-spec covers to reduce inventory pressure.
• Blank Flat Design：Smooth blank surface allows flexible modification for octagon electrical box covers, with polished edges to prevent scratches, suitable for DIY and professional use.