Abb 166 Outlet Box 4 Inch Round 3/4 Inch Knockouts

Product Description

The ABB 166 is a 4-inch round outlet box fitted with 3/4-inch knockouts, designed for electrical rough-in work in residential and light commercial construction. This box provides a secure mounting point for light fixtures, ceiling fans, and other electrical devices where a round box profile is required. Licensed electricians install this box during the rough-in phase, securing it to framing or structural members before drywall or ceiling finishes are applied. The knockout configuration allows conduit or cable connectors to be brought in from multiple entry points, giving installers flexibility on the job site.

This outlet box suits standard residential and light commercial electrical installations where a 4-inch round box is called for by the design or code requirement. It is commonly used at ceiling fixture locations, junction points, and surface-mounted device applications. The box ships in a carton of 50 units, making it practical for contractors stocking material for multi-unit or tract work.

Key Features

• 4-inch round profile fits standard ceiling and fixture applications
• 3/4-inch knockouts accommodate common conduit and connector sizes
• Sold in a carton of 50 units for contractor-quantity purchasing
• Compatible with standard round cover plates and fixture mounting hardware

Compatibility

Designed as an OEM-style replacement and new-construction outlet box for standard 4-inch round electrical box installations in residential and light commercial wiring systems.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize the circuit at the panel and verify absence of voltage before working in the box or connecting wiring. Secure the box firmly to framing or a listed support bracket rated for the intended load, particularly at ceiling fixture locations. Do not exceed the box fill capacity as calculated per NEC Article 314.

Technical Specifications

• Box Shape: Round
• Knockout Size: 3/4 inches
• Box Size: 4 inches
• Carton Quantity: 50 per carton
• Carton Weight: 31.65 pounds
• Carton Dimensions (L x W x H): 20 inches x 7.5 inches x 13.5 inches
• UPC: 05016900166

Standard Information

• Brand: ABB
• Manufacturer Part Number: 166