Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BM11043 found under Filter Media Air Conditioning by Farr Co. The National Stock Number assigned to this part is 4130000522590, 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 BM11043.