Upgrade your HVAC system with this 12-inch starting collar featuring an integrated adjustable damper, designed to provide precise airflow control and improved energy efficiency. Perfect for both HVAC professionals and DIY installers, this durable duct connector ensures a smooth, secure transition from your ductboard plenum to round ducting.

Built for easy installation, the pre-attached damper blade allows you to adjust and balance airflow to specific rooms or zones, helping optimize comfort and reduce energy waste. Its sturdy metal construction ensures long-lasting performance, while the airtight fit improves overall system efficiency.

Key Features:

• 12-inch round starting collar with integrated adjustable damper
• Designed for easy ductboard installation and a tight, secure seal
• Enables precise airflow regulation and zone control
• Helps reduce energy costs and improve HVAC performance
• Ideal for residential and commercial duct systems