About This Improve water taste. Reduce dirt, rust, sand, silt, and other suspended solids in the water. Easy replacing, no tools needed, no professional experience needed. Rip the film, through the expired cartridge and put the new one into the housing. Specifications: 20" x 4.5" Filter Cartridge, Operating Pressure: 25-116 PSI. No pressure drops, up to 15 GPM. 100,000 gallons water capacity. Need to be replaced every 6 months. Model: WF-PP20BB. Melt blown made, 100% pure polypropylene without any glue particles. Three layers from inner to outer: high level filtration inside, coarse fiber in the middle, and fine fiber in the surface. The cartridge is characteristic of the high capacity of dirt, low pressure drops, high flow rate, good chemical resistance. It can reduce the suspended substance, particulates and rust in the water effectively. Overview Material : Polypropylene (PP) Product Dimensions : 4.5"D x 4.5"W x 20"H External Testing Certification : NSF Product Benefits : Removes suspended solids for cleaner, better-tasting water and is easy to replace with no pressure drops and high water flow rate. Removes suspended solids for cleaner, better-tasting water and is easy to replace with no pressure drops and high water flow rate. Brand : HQUA