The Culligan HD-950A Heavy-Duty Sediment Filter Housing preserves and protects your household plumbing and water-using appliances. Designed for installation where a 1-inch water main line is present at the point of entry this filter housing unit features a pressure relief button used at time of cartridge change. For ease of cartridge change a housing wrench is included. The large filter size provides extra capacity where high sediment concentration is an issue. Because water quality varies among locations the HD-950A is sold without a filter cartridge. Filter life varies based on your cartridge type and water quality. Consult the information on your filter for further guidance on when to replace the cartridge. The housing unit includes a 5-year limited warranty. The HD-950A housing is for use with Culligan filter cartridges CW5-BBS CW25-BBS CP5-BBS P25-BBS R50-BBSA and RFC-BBSA. Culligan makes getting cleaner water safe easy and convenient. With everything from whole home filters under-sink filters shower filters and more we have all your water filtration needs covered. Visit our website to schedule your free water test or an appointment with your local Culligan water expert.