About This Long Lasting & Cost Efficient Filtration - Our filters are some of the longest lasting on the market. Usually keep your water fresh for 6-8 months for 3962 Gallons clean water(that depends on your local water quaility), 1 pack filter replacement is available! Please search "B0CM8MWTXK " Prevent 99.9999% of Harmful Contaminants: High quality filter material to prevent organic and inorganic contaminants down to 0.15 micron. Valve Design: Prevent harmful contaminants from flowing back into the shower and causing harm to our bodies. Certifications: NSF-WRC, IMSL, Kiwa BRL-K1410, AIM to demonstrate that harmful contaminants couldn’t pass the filters Nelson Labs tested, see full report below Operating Temperature: 41-100℉/ 5-38℃; Operating Working Pressure: 15-100 psi / 100-689 kPa. Note: Due to the difference of water quality in different regions, the actual service life may be different from the recommended service life. Overview Brand : Safe Water Products Special Feature : NSF certified Product Dimensions : 5.8"L x 2.7"W x 2.7"H Material : Acrylonitrile Butadiene Styrene Capacity : 20000 Liters Included Components : 1 Package Information : Bottle Installation Type : Countertop Purification Method : Ultra Filtration Power Source : Manual Operation