Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A80-40IN found under Filtering Roll Air Conditioning by United Air Filter Company. The National Stock Number assigned to this part is 4130004028491, 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 A80-40IN.