Protect your high-efficiency HVAC or plumbing system with the ECAP321 PVC flue cap. This patented rooftop vent cap improves airflow while shielding your system from rain, snow, debris, and pests. Designed to outperform traditional double 90° elbows and concentric vents, it’s a fast, technician-approved solution for any PVC-vented exhaust or intake system.

Compatibility

For use on all PVC-vented high-efficiency applications, including:

• Gas furnaces (90%+ AFUE)
• Tankless water heaters
• Radon mitigation systems
• Plumbing vents
• HVAC exhaust and intake lines

OEM-approved by:

• Amana
• Bosch
• Goodman

Precisely fits 1", 2", and 3" PVC pipe sizes.

Replaces / Cross-Reference

• Supco ECAP321
• TradeFox E-Cap
• Alternative to concentric vent kits

Technical Specifications

• Material: GELOY CR7520 ASA resin (UV, heat, and cold resistant)
• Dimensions: 5-1/2" outer diameter x 3-5/8" height
• Mounting: Slip-fit design for 1", 2", and 3" PVC pipe
• Patent: U.S. Patent #6,978,803
• Color: White

Benefits and Features

• Faster and easier to install than traditional P-trap or double 90° elbow setups
• Promotes unrestricted airflow for both intake and exhaust
• Prevents rain, snow, leaves, and pests from entering vent lines
• Reduces risk of moisture damage to furnace motors and internal components
• Durable, weather-resistant construction for long-term rooftop exposure
• Technician-invented and Supco TradeFox approved

Installation Notes

• No glue or fasteners required-simply slip onto existing PVC vent pipe
• Ensure proper orientation for intake and exhaust applications
• Compatible with both horizontal and vertical vent terminations

Product Details