Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CM45W found under Filter Element Intake Air Cleane by Industrial Filter Mfrs Inc. The National Stock Number assigned to this part is 4310012974700, and the Federal Supply Class is 4310 Compressors And Vacuum Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CM45W.