Hubbell PRB57550WH Round Electrical Box 5 Hole White

Product Description

The HUBBELL PRB57550WH is a round electrical outlet box designed for mounting lighting fixtures, ceiling fans, and junction applications in residential and light commercial wiring. This white round box features five knockout holes sized at 1/2 inch and 3/4 inch, giving electricians flexible conduit and cable entry options in a single enclosure. The round profile is the standard form factor for ceiling-mounted fixture support and device mounting where a square or rectangular box is not required. Licensed electricians install this box during rough-in work before drywall or finish surfaces are applied.

This round box is suited for residential new construction and renovation projects where ceiling or wall fixture mounting is required. The five knockout configuration accommodates multiple entry points, supporting installations that require conduit runs or non-metallic sheathed cable. The white finish is appropriate for exposed or semi-exposed applications where appearance is a consideration.

Key Features

• Round box profile sized for ceiling fixture and junction applications
• Five knockout holes for flexible conduit or cable entry
• 1/2 inch and 3/4 inch knockout sizes to accommodate common trade conduit
• White finish suitable for exposed or finish-visible installations
• Standard round form factor compatible with typical ceiling fixture mounting hardware

Compatibility

Designed as an OEM-style replacement or new-installation round electrical box for standard residential and light commercial ceiling fixture mounting applications.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize the circuit at the breaker panel and verify absence of voltage before beginning work. Secure the box to structural framing or an approved brace before pulling conductors. Do not exceed the box fill capacity as calculated per NEC Article 314.

Technical Specifications

• Knockout Sizes: 1/2 inch and 3/4 inch
• Number of Knockouts: 5
• Box Shape: Round
• Color: White

Standard Information

• Brand: HUBBELL
• Manufacturer Part Number: PRB57550WH