The Rheem-Ruud AXRF-FAA1 Fresh Air Damper is a manual HVAC accessory designed to regulate the intake of outdoor air into compatible packaged air conditioning and heat pump units. It replaces the return air duct cover and allows users to adjust fresh air intake from 0% to 35% using a side-mounted damper. This component supports indoor air circulation, helps improve ventilation, and pro... https://www.partshnc.com/axrf-faa1-rheem-ruud-fresh-air-damper