Aprilaire 6707 specifications:
The Aprilaire 6707 - Slip-in Round 7" Damper is a spring-return damper designed to be inserted in a seveb inch round branch duct. This HVAC damper helps zone your home without costly duct modification. The Aprilaire damper provides true comfort throughout your home and boasts maintenance-free operation. This motorized damper is also known by model number 6707.