CASAHEAL 4 Pack 15 Stage Shower Filter Replacement Cartridge, For Hard Water

$38.99 retail. On sale at Amazon for $30.95. One of the inner boxes was opened (see picture). Filters are new. Acrylonitrile Butadiene Styrene (ABS) Dimensions: 2.4D x 2.4W x 2.7 Weight (each): 7.2 ouncesNSF testing certificationCasaHeal Replacement Cartridge is compatible with various shower filter systems, including AquaBliss Shower Filter Series (SF100, SF220), AquaHomeGroup Filtered Shower Head, iSpring SF Series (SF1S, SF2S, SF3S, SF4S), FEELSO Shower Head, etc Each shower head cartridge is designed to filter out impurities and toxins for up to 2 months.This Casaheal water softener attachment will actually let you get clean. The hard water filter for shower head helps to eliminate impurities.The shower filters remove chlorine and heavy metals have 15 distinct filters water passes through. This filtering process allows only the cleanest and purest pH balanced water to flow from the shower head water filter. Perfect for everyday use. premium materials and excellent craftsmanship ensure long-lasting durability.