The product is a set of four 20-inch sediment pre-filters designed for whole house water filtration. These pre-filters are made of paper material and are suitable for both commercial and household use. They are designed for under sink installation and can remove sediments to provide clean water for drinking and cooking. With a maximum flow rate of 7 gallons per minute and a capacity of 16000 gallons, these pre-filters are an efficient solution for sediment reduction in your water supply.