The Carrier 48TM401170 Header Assembly with Metering Device is a refrigerant distribution component designed for compatible Carrier packaged rooftop HVAC units. It directs liquid refrigerant through the metering device, which regulates refrigerant flow before distributing it across the evaporator coil circuits. Used in Carrier 48TM series gas heating and electric cooling equipment, th... https://www.partshnc.com/48tm401170-carrier-header-assembly-wmeter-device