Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AG-1-1997 found under Filter Particulate by Flanders Filters Inc. The National Stock Number assigned to this part is 4240014989303, and the Federal Supply Class is 4240 Safety And Rescue Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AG-1-1997.