Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4448-68 found under Filter Head Assy by Culligan Intl Co. The National Stock Number assigned to this part is 4610014483569, 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 4448-68.