Thomas Betts DIH4-1-LM Weatherproof Outlet Box 1 Gang Aluminum

Product Description

The THOMAS BETTS DIH4-1-LM is a single-gang, weather-resistant aluminum outlet box designed for electrical wiring applications where moisture and environmental exposure are a concern. Built to NEMA 3R standards, this rectangular enclosure measures 4.5 inches in overall height, 2.5 inches in overall width, and 2 inches in overall depth. It ships with a gasket, mounting lugs, plugs, and screws, making it a ready-to-install solution. The powder-coated silver aluminum body resists corrosion and provides durable protection for device connections in demanding installation environments. Licensed electricians and electrical contractors are the primary installers of this type of enclosure.

This outlet box is suited for residential and light commercial electrical installations where outdoor or moisture-prone locations require NEMA 3R-rated protection. It supports both horizontal and vertical mounting orientations, giving installers flexibility in conduit routing and box placement. The four 0.5-inch knockouts allow for standard half-inch trade-size conduit entry. Applications include exterior wall outlets, weatherproof device boxes on building facades, and protected wiring enclosures in covered outdoor areas. CSA Certified and UL Listed under UL File E28688, this enclosure meets Federal Specification W-C-586 requirements.

Key Features

• NEMA 3R weather-resistant rating for outdoor and moisture-exposed locations
• Powder-coated aluminum construction resists corrosion in exterior environments
• Four 0.5-inch knockouts for standard conduit entry
• Supports horizontal and vertical mounting orientations
• Includes gasket, mounting lugs, plugs, and screws for complete installation
• CSA Certified, UL Listed (E28688), and meets Federal Specification W-C-586

Compatibility

Designed as an OEM-style replacement and standard-fit outlet box for single-gang device installations using 0.5-inch trade-size conduit in NEMA 3R-rated applications.

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 breaker panel and verify absence of voltage before beginning any wiring work. Ensure all conduit connections are properly sealed and that the included gasket is seated correctly to maintain the NEMA 3R weather-resistance rating. Mounting lugs and screws are included — use appropriate fasteners for the mounting surface to ensure secure attachment.