Orbit Industries RW-400/300 Reducing Washer 4 to 3 Inches

Product Description

The ORBIT INDUSTRIES RW-400/300 is a reducing washer designed to adapt a 4-inch knockout or opening down to a 3-inch fitting. Reducing washers are standard hardware in electrical installation work, used to fill the gap when a conduit fitting or connector is smaller than the knockout it is being mounted in. This washer seats around the fitting and against the enclosure wall, providing a clean, secure transition between the two sizes. Electricians install this part during panel, junction box, and enclosure work where knockout size and fitting size do not match.

The RW-400/300 is suited for use in residential and commercial electrical installations. It is typically installed in metal electrical enclosures, panelboards, junction boxes, and pull boxes wherever a 4-inch knockout must be reduced to accept a 3-inch conduit fitting or connector. This is a common task when retrofitting existing enclosures or when standard stock knockouts do not match the required conduit size.

Key Features

• Reduces a 4-inch opening to a 3-inch fitting in a single step
• Standard reducing washer profile seats flush against enclosure walls
• Compatible with typical metal electrical enclosure knockout installations
• Compact and lightweight for easy handling during installation

Compatibility

Designed as an OEM-style fit for use with standard 4-inch electrical knockouts requiring reduction to 3-inch conduit fittings or connectors in metal electrical enclosures.

Installation Notes

Reducing washers are installed by licensed electricians in accordance with NEC requirements for conduit and fitting installations. De-energize and lock out the enclosure before beginning any work inside a panel or junction box. Seat the washer flush around the fitting and against the enclosure surface before tightening the locknut. Do not force the washer into an undersized or damaged knockout.

Technical Specifications

• Large Opening Size: 4 inches
• Small Opening Size: 3 inches
• UPC: 835243037267

Standard Information

• Brand: ORBIT INDUSTRIES
• Manufacturer Part Number: RW-400/300