

Documentation & Downloads

Hubbell 8366 4 in. Square Cover, Surface Cover 3/8 in., 4.6 Cu. In., for 2.156 in. Opening (25-Pack)
- MPN: 8366
- UPC: 626463003268
- PPN: HBL-8366
- UNSPSC: 39121704
CAD
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Description
Features
- The Hubbell 8366 (often branded under TradeSelect or Hubbell Canada) is a 4-inch square metallic surface cover designed for industrial and commercial junction boxes. It is used to finish an "exposed work" installation, protecting internal wiring while providing a specific mounting point for high-amperage electrical devices.
- The cover features a precision-cut 2.156-inch (2-5/32") diameter round opening. This specific size is the industry standard for mounting 30-Amp and 50-Amp single receptacles, such as those used for heavy-duty power tools, welders, or large appliances.
- With a 3/8-inch raised surface, this cover provides an additional 4.6 cubic inches of internal wiring capacity. This extra space is critical when working with the thick 8 AWG or 6 AWG wires required for 30A and 50A circuits, as it allows for proper wire-bending radii and prevents the overcrowding that can lead to electrical shorts.
- Manufactured from heavy-duty galvanized steel using a "drawn" process, the 8366 is built to withstand mechanical impacts and resist corrosion. Unlike plastic covers, this steel plate will not crack or warp when a heavy-duty power cord is frequently plugged in and removed, ensuring the receptacle remains securely anchored to the box.
- The cover is designed for a simple two-screw attachment to any standard 4-inch square box. It typically includes self-tapping screws which virtually eliminate the risk of stripping threads during installation. The device itself (the receptacle) is bolted directly to the underside of the cover before the assembly is secured to the box.
Documentation & Downloads
Specifications
Additional
- Size
- 4 in
- Volume
- 4.6 cu in
- Material
- Steel
- Type
- Exposed Cover, Surface Cover
- Compliance
- CSA Certified
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CAD
$3.81
/ EA
Available to Ship Same/Next Business Day if In Stock and Ordered before 12:00 PM EST
Company Stock:
0
Looking to buy a large quantity?
To view product inventory
CAD$3.81/ EA
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