The MRCOOL MDPHK12D Universal Electric Heat Kit for Packaged Units is an electric heating accessory designed for compatible packaged HVAC systems. It uses electric resistance heating elements to warm air as it passes through the unit, providing supplemental heat when additional heating capacity is required. Suitable for packaged heat pump and air conditioning equipment, this heat kit ... https://www.partshnc.com/mrcool-universal-12kw-electric-heat-kit-for-packaged-units-mdphk12d