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Steel reducing washer 4 inch by 3 inch

L.H. DOTTIE

L.H. DOTTIE RW108 Conduit Reducing Washer 4 in x 3 in Steel

SKU CH-YZYQ-D3H6H

Steel reducing washer connects 4-inch to 3-inch conduit for secure electrical installations

  • Reduces conduit from 4 in to 3 in
  • Steel construction resists corrosion and impact
  • DOTTIE brand trusted by electrical pros
  • Fits standard rigid and IMC conduit
  • Simple slip-on install saves labour time

Conduit Reducing Washer 4 in x 3 in

The L.H. DOTTIE RW108 is a steel conduit reducing washer designed to connect 4-inch and 3-inch conduit sizes. It serves electricians and maintenance technicians who need a durable transition fitting for rigid or IMC conduit systems. The steel construction provides mechanical strength for industrial and commercial installations.

Upgrading Conduit Transitions

This washer replaces improvised bushings or mismatched couplings when joining dissimilar conduit diameters. The jump is worth it when a code-compliant reducer is required to maintain grounding continuity and protect conductors at the transition point. It eliminates the need for custom-fabricated adapters in standard trade sizes.

Simple Threaded Installation

The washer installs by threading between a 4-inch fitting and a 3-inch conduit or coupling using standard conduit threads. What usually goes wrong is cross-threading during hand-tightening or insufficient engagement that leaves a gap. Applying even pressure and verifying full thread contact prevents loosening under vibration.

Highlights

  • Reduces conduit from 4 in to 3 in
  • Steel construction resists corrosion and impact
  • DOTTIE brand trusted by electrical pros
  • Fits standard rigid and IMC conduit
  • Simple slip-on install saves labour time

Specifications

BrandDOTTIE

Questions about this item

Will the 4 in x 3 in reducing washer fit standard 4-inch and 3-inch conduit hubs?

The RW108 reducing washer is sized 4 in x 3 in to adapt a 4-inch conduit hub down to a 3-inch conduit, matching standard trade sizes for steel conduit fittings.

How do I install the RW108 reducing washer and what step is often missed?

Place the washer over the 3-inch conduit end, seat it inside the 4-inch hub or knockout, then tighten the locknut; the step often missed is ensuring the washer sits flat against the hub shoulder before final torque.

When should the RW108 steel reducing washer be replaced?

Replace the washer if you see rust, deformation, or cracked galvanising after pulling wire, or whenever the conduit run is disassembled and the washer no longer seats flat.

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