WRS EFCO Jamb Dust Stop and End Cap Set - Lower Sash

Keep your EFCO windows operating smoothly and sealed against dust and air infiltration with this precision-fit Jamb Dust Stop & End Cap Set for lower window sashes. 

• Black Finish
• Compatible with EFCO Window Applications
• Includes 2 Dust Stops/End Caps per Set
• Sets Sold Individually, Other Accessories and Hardware Not Included
• See Product Images for Dimensions

What is an EFCO Jamb Dust Stop & End Cap Set?

The EFCO Jamb Dust Stop & End Cap Set is a replacement component designed for aluminum window systems. It fits into the window jamb to seal gaps, reduce dust intrusion, and improve energy efficiency, while the end caps provide a secure and finished installation for the lower sash.

Key Features

• Designed for EFCO Windows
  Engineered specifically for compatibility with EFCO aluminum window systems.

• Improves Seal & Efficiency
  Helps block dust, debris, and air leaks, contributing to better indoor comfort and energy savings.

• Durable Construction
  Made from high-quality materials built to withstand repeated window operation and environmental exposure.

• Complete Set
  Includes jamb dust stops and matching end caps for a clean, professional finish.

• Easy Installation
  Ideal for maintenance teams and DIY repairs—fits directly into existing window channels.

Frequently Asked Questions (FAQs)

What does a jamb dust stop do?
A jamb dust stop seals the gap between the window sash and frame, preventing dust, air, and debris from entering while stabilizing sash movement.

When should you replace a window dust stop?
Replace it when you notice drafts, dust buildup inside, or worn/damaged components affecting window performance.

Are EFCO dust stops universal?
No, EFCO jamb dust stops are designed for specific window series. Always confirm compatibility before ordering.

Ideal For

• Commercial building maintenance

• Window repair professionals

• Property managers maintaining EFCO systems

• DIY window restoration projects

Why Choose This EFCO Replacement Part?

Using genuine or compatible EFCO components ensures proper fit, long-term durability, and optimal window performance—avoiding issues caused by generic or ill-fitting parts.