Appleton 339-R Reducing Bushing 2.5 X 1 Inch

Product Description

The APPLETON 339-R is a threaded reducing bushing designed to step down conduit or fitting threads from a 2.5-inch opening to a 1-inch connection. Reducing bushings of this type are standard hardware in electrical conduit systems, allowing installers to transition between different trade sizes within a raceway or enclosure without replacing entire fittings. The 339-R is a compact, solid fitting used in both new construction and retrofit work. Licensed electricians and electrical contractors are the primary installers, using it wherever a conduit run changes trade size at a junction box, enclosure knockout, or coupling point.

This reducing bushing is suited for use in commercial and industrial electrical installations where rigid metal conduit or intermediate metal conduit systems require a size transition. It fits standard threaded conduit entries and enclosure knockouts. The fitting is appropriate for dry, damp, or location-specific applications consistent with its listed ratings. It is commonly installed at panelboards, junction boxes, and pull boxes where multiple conduit sizes converge.

Key Features

• Steps down from 2.5-inch to 1-inch threaded conduit connection
• Compact profile at approximately 0.72 inches tall for tight enclosure entries
• Solid one-piece construction for reliable thread engagement
• Compatible with standard NPT-threaded conduit fittings and enclosure knockouts

Compatibility

Designed as an OEM-style replacement or standard-stock reducing bushing for use with 2.5-inch to 1-inch threaded conduit systems in commercial and industrial electrical 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 and lock out the panel before working in any enclosure or junction box. Thread the bushing hand-tight into the knockout or fitting, then snug with an appropriate pipe wrench or strap wrench. Do not overtighten, as this may damage threads on the mating conduit or enclosure.

Technical Specifications

• Inlet Size: 2.5 inches
• Outlet Size: 1 inch
• Package Dimensions (L x W x H): 5.7 x 5.4 x 0.72 inches
• Weight: 1.29 pounds
• UPC: 78312678583

Standard Information

• Brand: APPLETON
• Manufacturer Part Number: 339-R