iO HVAC Controls D-Z1-2018 20 Inch X 18 Inch Rectangular Two-Position Zone One Damper Assembly

- 20 inch X 18 inch rectangular. 

- 5 year warranty.

Z1 Series Zone One is a control damper assembly designed to solve over-heating and over-cooling problems. It can be used to control a single room, or by using multiple dampers to zone multiple rooms. The Zone One works independently from the equipment, simply restricting airflow (closing off the damper) to over-conditioned areas until the thermostat (sold separately) is calling.