About This Whole House Protection: Perfect for installation in main water lines to protect appliances like water heaters, washing machines, and showers by filtering out sediment and other particles. Standard Size Compatibility: Fits all 20" x 4.5" water filter cartridges, making it a versatile option for various whole house water filtration systems. Durable Construction: Made from reinforced polypropylene for enhanced strength and chemical resistance, ensuring long-lasting performance and safe, clean water. Pressure Release Button: Built-in pressure release button allows for safe and easy filter replacement by relieving internal pressure before opening the housing. Easy Maintenance: The included wrench simplifies housing removal and filter replacement for hassle-free upkeep. High-Flow Capacity: Designed with a 1" inlet/outlet for fast water flow, ensuring efficient water distribution throughout your home without pressure loss. Overview Brand : iSpring Special Feature : Pressure Release Button Product Dimensions : 7.2"L x 7.2"W x 23"H Material : Plastic Capacity : 20 Gallons Included Components : housing, wrench Package Information : Cartridge Installation Type : Whole House Purification Method : Reverse Osmosis Power Source : Instruction Manual