Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9451-1000 found under Filter Element Air Conditioning by A And J Manufacturing Company. The National Stock Number assigned to this part is 4130014697940, 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 9451-1000.