Jumbo, Heavy Duty Whole House Sediment Water Filter, Install Easily On 1 inch Main Water Lines, 4 Times The Capacity Of Standard 10 Filters, High Flow, Heavy Sediment Capabilities With Minimal Pressure Drop, Includes Housing Wrench, Use With Spas, Hot Tubs, Wells, Trickle Irrigation, Farm Uses & Other Commercial/Indus Or Industrial Applications, Replacement Cartridges Include Model #CP5-BBS-D True Value #529-336 Or Model #R50-BBSA True Value #852-582, Cartridges Sold Separately.