1. Introduction
This manual provides instructions for the proper installation and use of the BELL 00837 Electrical Box Cover. This product is designed to mount a single switch or receptacle within a 4-11/16 inch square electrical box. It is constructed from pre-galvanized steel and offers a 3.5 cubic inch capacity.
2. Safety Information
WARNING: Risk of electric shock. Always turn off power at the circuit breaker or fuse box before installing or servicing any electrical components. If you are unsure about any part of these instructions, consult a qualified electrician.
- Ensure all local and national electrical codes are followed.
- Wear appropriate personal protective equipment (PPE), such as safety glasses and insulated gloves.
- Verify that the electrical box is properly grounded.
3. Setup and Installation
3.1. Required Tools
- Screwdriver (appropriate for electrical box screws)
- Voltage tester
3.2. Pre-Installation Steps
- Turn off power to the electrical box at the main circuit breaker or fuse box.
- Use a voltage tester to confirm that the power is off before proceeding.
- Ensure the existing electrical box is a 4-11/16 inch square box. This cover is designed specifically for this size.
3.3. Mounting the Cover
The BELL 00837 cover is designed to be mounted directly onto a 4-11/16 inch square electrical box, providing a raised surface for a single device.
- Align the mounting holes on the BELL 00837 cover with the screw holes on the 4-11/16 inch square electrical box.
- Secure the cover to the electrical box using appropriate screws (not included). Do not overtighten.
- Once the cover is securely attached, you can proceed to install your single switch or receptacle into the raised opening of the cover.
- Secure the switch or receptacle to the cover using the device mounting screws.

Figure 1: Front view of the BELL 00837 Electrical Box Cover, showing the raised opening for a single device and mounting holes.

Figure 2: Angled view of the BELL 00837 Electrical Box Cover, highlighting the pre-galvanized steel construction and the 3.5 cubic inch capacity marking.
4. Maintenance
The BELL 00837 Electrical Box Cover requires minimal maintenance. Periodically inspect the cover and the installed device for any signs of damage, corrosion, or loose connections. Ensure that the cover remains securely fastened to the electrical box. Do not paint over the cover as this may affect its electrical properties or UL listing.
5. Troubleshooting
- Cover does not fit the electrical box: Verify that your electrical box is a 4-11/16 inch square box. This cover is not compatible with other sizes.
- Device does not fit the cover opening: Ensure you are attempting to install a standard single switch or receptacle. The cover is designed for a single device.
- Loose cover: Tighten mounting screws. If screws do not hold, inspect the electrical box for damaged threads.
6. Specifications
| Model Number | 00837 |
| Brand | BELL |
| Material | Pre-galvanized steel |
| Color | Gray |
| Compatibility | 4-11/16 inch square electrical boxes |
| Capacity | 3.5 cubic inches (cu. in.) |
| Device Accommodation | 1 single device (switch or receptacle) |
| Certifications | UL Listed, CSA |
| Item Weight | 5.8 ounces (0.36 Pounds) |
| Manufacturer | Hubbell Electrical Products |
7. Warranty Information
This BELL 00837 Electrical Box Cover comes with a 1-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from improper installation, misuse, abuse, or unauthorized modifications. For warranty claims or further details, please contact the manufacturer.
8. Support and Contact
For technical assistance, product inquiries, or support, please contact Hubbell Electrical Products, the manufacturer of this device. Refer to the product packaging or the manufacturer's official website for the most current contact information.
Always provide the model number (00837) when seeking support.





