Shower Water Filtration System; Type 1-Cartridge; Peak Flow Rate 0.85 GPM at 60 PSI; Service Flow Rate 0.85 GPM at 60 PSI; Filter Media Type Coconut Shell Carbon; Tank Size 3-3/8 Inch Diameter x 12-1/16 Inch Height; Material High-Impact Plastic; Warranty 5 Year Limited; Inclusions/Features K-77687 Aquifer Single Cartridge, Under-Sink Installation, 1/4 Turn Twist Cartridge for Easy Installation and Replacement, Cold Water Use Only; Applicable Standard CSA B483.1, NSF 42/53/401; Cartridge Capacity 389 Gallon; Temperature Rating 33 to 100 Deg F