Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PS5-20C found under Filter Cartrid Spec by Pentek Inc. The National Stock Number assigned to this part is 4610015940965, and the Federal Supply Class is 4610 Water Purification Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PS5-20C.