The 3-Stage Reverse Osmosis RO Sediment GAC Water Filter Replacement Cartridges Set is a high-quality water filtration solution suitable for both commercial and household use. This set includes 6 cartridges with a durable lifespan of 6-12 months, designed to remove sediment and chlorine taste & odor contaminants. The cartridges are compatible with various brands such as APEC, iSpring, and Express, and come in a size of 10" x 2.5". Made of 100% polypropylene and coconut shell material, these cartridges are NSF, CE, FDA, BPA-Free, and food-grade certified for reliability and safety. Perfect for maintaining clean and safe drinking water in your home or business.