Mulberry Conduit Knockout Reducer Washer, Trade Size Adapter

Mulberry Conduit Knockout Reducer Washer, Trade Size Adapter

The Mulberry Conduit Knockout Reducer Washer gives electricians and contractors a simple way to adapt an oversized conduit or enclosure knockout down to a smaller trade size opening, letting smaller conduit fittings, connectors, locknuts, or cable assemblies seat securely without swapping out the box, cabinet, or panel. This family of reducer washers is available in trade size reductions from 3 in. to 2 in. and 4 in. to 2 in., covering the most common mismatched conduit-to-knockout situations found on commercial, industrial, and residential job sites. Each washer is a purpose-built reducer profile, distinct from a standard locknut or bushing, engineered to correct oversized knockouts so installers can complete the job without additional hardware replacement. Every option in this family is clearly identified with its own Mulberry model number for accurate ordering, reordering, and stocking.

Key Features

• Trade Size Reduction Range: Available in reductions from 3 in. to 2 in. and 4 in. to 2 in., allowing smaller conduit, connectors, or fittings to seat securely in a larger opening.
• Reducer Washer Design: Purpose-built washer profile intended specifically for trade size adaptation between mismatched knockouts and conduit or fitting sizes, distinct from a standard locknut or bushing.
• Field-Ready Solution: Resolves conduit-to-knockout size mismatches on site without requiring a full box, cabinet, or panel replacement, saving material and labor time.
• Model Identification: Each size option is individually marked with its own Mulberry model number for easy identification, reordering, and stocking by electrical contractors, panel shops, and distributors.
• Compact Hardware Component: A small, low-profile washer that fits within existing knockout openings without adding significant bulk to the enclosure.
• Consistent Trade Size Match: Designed to standard trade size dimensions so each option interfaces predictably with common conduit, connectors, and knockouts used in the field.

Technical Specifications

• Trade Size Reduction Options: 3 in. to 2 in., 4 in. to 2 in.
• Refer to manufacturer documentation for complete specifications.

Typical Applications

• Panelboard and Enclosure Knockout Adaptation
• Conduit Size Transitions in Commercial and Industrial Wiring
• Electrical Box and Cabinet Installations
• Renovation and Retrofit Projects with Oversized Existing Knockouts
• Distributor and Contractor Stock for Standard Trade Size Adapters
• Maintenance and Service Work on Existing Electrical Systems

Why Mulberry?

Mulberry manufactures electrical hardware components, including this line of reducer washers, to help electricians and contractors resolve everyday conduit and knockout size mismatches on the job site. Specifying the exact Mulberry model number for the required trade size reduction when ordering helps ensure the correct fit and dependable performance in standard electrical installations, whether for new construction or maintenance work. Mulberry's reducer washers are stocked and specified as small-format hardware that keeps standard electrical installations correctly sized and easy to complete across a range of common trade size combinations.