MRCOOL MSHDK1830 Signature 1.5 to 2.5 Ton Air Handler Downflow Kit is an installation accessory designed to convert compatible air handlers for downflow airflow configuration. It works by providing the necessary components to redirect conditioned air downward through the air handler, supporting proper airflow and duct connection. Designed for use with compatible MRCOOL Signature Serie... https://www.partshnc.com/mrcool-signature-down-flow-kit-mshdk1830