L H Dottie Co RW107 Reducing Washer 4x2.5 Inch

Product Description

The L H Dottie Co RW107 is a reducing washer designed to adapt a larger knockout opening to a smaller conduit or fitting entry point. Reducing washers are standard hardware accessories used in electrical panel and enclosure work, allowing electricians to reuse or repurpose knockouts without cutting new openings. The RW107 spans a 4 inch outer diameter down to a 2.5 inch inner opening, providing a clean, code-acceptable transition between the two sizes. It is sold individually and is a staple item on commercial and residential electrical rough-in jobs.

This reducing washer is used wherever a conduit entry point or fitting does not match the available knockout size in an electrical enclosure, panelboard, junction box, or similar metal enclosure. The 4 inch to 2.5 inch reduction is a common size pairing encountered during service panel upgrades, sub-panel installations, and commercial enclosure work. Electricians and electrical contractors typically keep a range of reducing washer sizes on hand to handle field conditions without delays.

Key Features

• 4 inch outer diameter to 2.5 inch inner opening for knockout size reduction
• Designed for use in electrical enclosures, panelboards, and junction boxes
• Sold individually, unit of measure is each
• Hardware accessory category fitting for standard electrical rough-in and retrofit work

Compatibility

Designed as an OEM-style replacement and standard hardware fitting for electrical enclosures and panelboards requiring a 4 inch to 2.5 inch knockout reduction.

Installation Notes

Installation is performed by licensed electricians in accordance with NEC requirements for enclosure and conduit entry points. De-energize and lock out the panel or enclosure before beginning any knockout or fitting work. The reducing washer seats into the existing knockout opening and should be secured with the appropriate locknut to prevent movement. Ensure the finished installation maintains the enclosure integrity required by the applicable electrical code.