Arlington Industries Plated Steel Reducing Washer - 4" to 3-1/2" Knockout Reducer
Professional Knockout Size Conversion Made Simple
The Arlington Industries Plated Steel Reducing Washer is an innovative knockout adapter designed to solve electrical box compatibility challenges. This plated steel reducing washer features precision-engineered dimensions for seamless 4" to 3-1/2" knockout conversion, delivering the reliable performance and professional finish that electrical contractors demand.
Innovative Features & Benefits
Precision Engineering
- Exact Size Conversion - Reduces 4" knockout to precise 3-1/2" opening, eliminating guesswork and ensuring perfect fit
- Plated Steel Construction - Superior corrosion resistance and durability for long-lasting performance in demanding environments
- Professional Grade Finish - Clean, uniform appearance that maintains installation aesthetics
- UL and CSA Listed - Meets rigorous safety standards for commercial and residential applications
Installation Efficiency
- Drop-In Design - Simple installation saves valuable job site time
- Secure Fit - Engineered tolerances ensure stable, vibration-resistant connection
- No Special Tools Required - Standard installation process with existing equipment
Technical Specifications
Material: Plated Steel | Reduces: 4" knockout to 3-1/2" knockout | Height: 5.500" | Finish: Silver plated | Listings: UL, CSA | Standard Packaging: 10 pieces | Corrosion-resistant plating for indoor and outdoor applications
Quick Installation Process
- Verify 4" knockout opening is clean and free of burrs
- Position reducing washer over knockout opening
- Ensure washer sits flush against surface
- Install 3-1/2" component through reduced opening
- Secure connection according to component specifications
- Verify tight, stable fit with no movement
Perfect Applications
Ideal for:
- Electrical Panel Modifications - Retrofit installations requiring different knockout sizes
- Commercial Buildings - Office complexes, retail spaces, and industrial facilities
- Residential Projects - Home electrical upgrades and new construction
- Industrial Applications - Manufacturing facilities and warehouse electrical systems
- Retrofit Projects - Upgrading existing electrical systems with new components
- Maintenance Operations - Repair and replacement work requiring size adaptation
- Custom Installations - Specialized electrical configurations requiring precise fit
- Code Compliance Projects - Meeting specific electrical code requirements
Knockout Reduction Advantage
Arlington's reducing washer eliminates the need for expensive panel replacements or custom fabrication when knockout sizes don't match component requirements, providing a cost-effective solution that maintains professional installation standards.
Why Choose Arlington Innovation?
Since 1949, Arlington Industries has been the trusted name for innovative electrical solutions that solve real-world installation challenges. Our reducing washers deliver the precision engineering and reliable performance that electrical professionals depend on for efficient, code-compliant installations.
Manufacturer Resources
Product Specs
- Listing:
- UL, CSA
- Material S :
- Steel
- Standard Packaging:
- 10pcs
- Trade Size:
- 4" x 3-1/2"
- Product Type:
- Reducing Washers
- Product Group:
- Conduit and Cable Fittings
- Department:
- Electrical
- Product Subgroup:
- Locknuts and Washers
- Product Color:
- Silver
- Product Height:
- 5.500"
- Product Weight:
- 0.188 lbs/each
- Product Width:
- 5.500"