Pentek DGD-5005-20 Filter Advantages The Pentek DGD-5005-20 water filters reduce the need for multiple housing step-down filtration systems. The Pentek DGD-5005-20 water filters are made from pure polypropylene construction and as a result are resistant to chemicals and corrosion. The Pentek DGD-5005-20 replacement filters are designed for water purity and bacteria and chemical resistance. This cartridge will not add taste odor or color to the liquid being filtered. The Pentek DGD-5005-20 water filter is ideal for all residential rural commercial industrial and municipal applications. Dual Gradient Density Advantages The Pentek DGD-5005-20 prefilter outer density layer reduces the particle load to the postfilter inner layer allowing it to operate at higher velocities and offer higher flow rate. By having a gradual micron refinement contaminants can be sifted out as water permeates the media instead of combating all the larger particles on the outer layer this allows for higher flow and greater holding capacity. The effective DGD-5005-20 filter depth is increased to a full 233% of standard spun-polypropylene or string-wound filters. This increased depth provides for very high particulate reduction efficiencies and added loading capacity. Polypropylene Filter Cartridge Polypropylene media inhibits bacterial growth making it an ideal option for both municipal and well water applications. These filters are effective at capturing contaminants such as sand sediment silt and more. Unlike carbon filter cartridges you wont have to worry about small carbon fines potentially spilling into your water while still enjoying the benefits of filtered water throughout your home. Polypropylene filters are great for whole house water filtration and can be used as effective pre-filters for whole house or point of use systems. For more spec information please read the Pentek DGD-5005-20 User Guide