Neo-Pure Multi-Cartridge 4 and 5 Round Series housings are manufactured out of sturdy 304L or 316L stainless steel. American-made, these housings are ideal for commercial or industrial filtration applications. Neo-Pure housings are equipped with V-band clamp or swing bolt closures allowing easy access for quick cartridge change-outs. Housings accept double-open ended and 222/FLAT or FIN cartridges. Standard Multi-Cartridge 4 and 5 round housings are in stock and ready to ship immediately. Fresh Water Systems carries all the replacement filter cartridges needed to keep your Neo-Pure Housing full and filtering.