Sedna Filter S1000-100-AQGet top-end filter performance with low maintenance! The single-piece base/tank is constructed of fiberglass-reinforced polypropylene for improved strength and chemical resistance.Fiberglass-reinforced cartridge filterGet top-end filter performance with low maintenance! The single-piece base/tank is constructed of fiberglass-reinforced polypropylene for improved strength and chemical resistance. The manual air relief valve and continuous internal air relief work together to maintain optimum filtration efficiency at all times.The unit’s innovative clamp ring design makes it easy to remove and rinse the cartridge, and the cartridge’s surface is designed to block and trap as many solids as possible. 11/2″ drain and washout allow quick and convenient maintenance, and 2″ plumbing provides maximum flow. One-year limited warranty.