Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W21952T found under Cooler Unit Air by Ir Ingersoll Rand. The National Stock Number assigned to this part is 4130013149235, and the Federal Supply Class is 4130 Refrigeration And Air Conditioning Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like W21952T.