Price of Covering Irregularly Shaped Electrical Boxes

Electrical box covers for irregularly shaped boxes typically range from $2 to $25 per cover, depending on material, size, and weatherproofing.

Cost Overview

The price of covers for irregularly shaped electrical boxes varies based on material, size, and functionality:

• Plastic or thermoplastic covers: These are the most common and affordable, generally costing $2 to $10 per cover. They are lightweight, easy to install, and suitable for indoor applications or standard irregular shapes with slight misalignment allowances (e.g., RACO mud ring covers) .
• Metal covers: Durable steel or aluminum covers, often used for outdoor or industrial applications, range from $5 to $25 depending on thickness, corrosion resistance, and UL listing . These are ideal for irregular boxes that require extra protection against impact or weather.
• Weatherproof or outdoor covers: For boxes exposed to moisture, such as outdoor outlets or junctions, weatherproof covers with gaskets and powder-coated finishes typically cost $10 to $20 . These covers can accommodate irregular shapes with adjustable mounting slots or flexible designs.
• Blank or utility covers: If the goal is simply to close off an unused irregular box, blank covers are available in plastic or metal, usually priced $2 to $15 .

Factors Affecting Price

1. Box Shape and Size: Non-standard or custom-shaped boxes may require specialized covers, which can increase cost.
2. Material: Plastic is cheaper but less durable; metal or weatherproof covers are more expensive.
3. Installation Features: Covers with adjustable mounting slots, gaskets, or extra space for adapters may cost more but provide a better fit for irregular boxes.
4. Brand and Retailer: Prices vary between retailers like Lowe's, Amazon, Grainger, and McMaster-Carr .

Practical Tips

• For slightly irregular boxes, standard adjustable mud ring covers or blank plates often suffice.
• For outdoor or exposed boxes, choose weatherproof covers with gaskets to prevent moisture ingress.
• Always check UL or NEC compliance to ensure safety and code adherence.
• Buying in bulk from industrial suppliers like Grainger or McMaster-Carr can reduce per-unit cost for multiple boxes . In summary, covering irregularly shaped electrical boxes can cost anywhere from $2 for a simple plastic blank cover to $25 for a heavy-duty, weatherproof metal cover, with the final price depending on material, size, and installation requirements.