Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 80457 found under Guard Fan Aircirula by Hunter Fan Company. The National Stock Number assigned to this part is 4140005653748, and the Federal Supply Class is 4140 Fans Air Circulators And Blower Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 80457.