iO HVAC Controls D-Z1-2018

iO HVAC Controls D-Z1-2018 20 Inch X 18 Inch Rectangular Two-Position Zone One Damper Assembly Features:?- 20 inch X 18 inch rectangular.? - 5 year warranty. Features and Benefits: - Stand-alone control of single room or multiple rooms - Two-position - Auto changeover - Minimum position adjustment - LED status indicato