Field Controls 46487201 GVD-7 7-Inch Automatic Vent Damper

The Field Controls 46487201 GVD-7 is a 7-inch automatic vent damper designed to improve heating system efficiency by preventing heat loss through the chimney when the heating appliance is not in operation. This motorized damper automatically opens when the heating system fires and closes when it shuts down, blocking the natural draft that would otherwise allow warm air to escape up the flue.

Key Features:

• 7-inch diameter fits standard residential venting systems
• Automatic operation synchronizes with heating appliance cycles
• Reduces standby heat loss and improves overall system efficiency
• Durable construction designed for long-term reliability in venting applications
• Helps lower heating costs by preventing conditioned air loss through the chimney
• Sold without wiring harness (harness must be purchased separately)

The GVD-7 vent damper is ideal for oil and gas-fired heating systems where improving efficiency and reducing energy waste are priorities. Proper installation by a qualified HVAC technician is recommended to ensure safe and effective operation.