Lennox Y8497 – AprilAire 6112, Barometric Bypass Damper, 12" Diameter

 

The Lennox Y8497 (AprilAire 6112) Barometric Bypass Damper is a high-quality 12-inch automatic air bypass solution designed for residential and light-commercial HVAC zoning systems. Built to maintain proper static pressure, this damper opens and closes based on system airflow, helping prevent excessive pressure buildup and improving overall comfort and system performance.

This barometric bypass damper is commonly used in multi-zone systems with variable air volume, ensuring balanced airflow even when some zones are closed. The adjustable counterbalance weight allows precise tuning for different system requirements, making it a dependable choice for contractors and installers who need stable pressure regulation.

 

Key Features

• 12-inch diameter round barometric bypass damper
• Automatically regulates static pressure in zoning systems
• Helps reduce blower noise and equipment strain
• Adjustable weight for precise pressure control
• Durable galvanized steel construction
• Compatible with most residential and light-commercial bypass applications
• Ideal for HVAC zoning systems needing consistent airflow management

 

Typical Applications

• Residential zoning systems
• Light commercial VAV setups
• Airflow balancing and pressure relief in multi-zone ductwork

This Lennox Y8497 / AprilAire 6112 damper is a reliable, easy-to-install solution that protects equipment, enhances comfort, and keeps zoning systems operating smoothly.