Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WHP18D020A000C found under Air Conditioner by United Refrigeration Inc. The National Stock Number assigned to this part is 4120015289448, and the Federal Supply Class is 4120 Air Conditioning Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like WHP18D020A000C.