Universal Adapter, For Nominal Duct Diameter 5 in, Inlet Diameter 5 1/2 in, Material Steel, Product Type Universal Adapter, Overall Length 6 in, Maximum Pressure Rating Not Applicable, Maximum Airflow Not Applicable, Inside Diameter 5 in, Includes Not Applicable, End Type Snap Lock, Gas Appliance Category Category I. This item has been restricted from sale in the following state (s): []