The Pentek DGD-2501-20 filter cartridge has a 25 micron pre-filter fine sediment water filter layer and a 1 micron post-filter extra-fine sediment water filter layer. The Pentek DGD-2501-20 filter cartridge reduces extra-fine dirt, sand, sediment, silt, rust particles, and scale particles. The Pentek DGD-2501-20 larger diameter of the pre-filter reduces the particle load to the post filter, allowing it to operate at higher velocities. The effective DGD-2501-20 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. The Pentek DGD-2501-20 water filters are pure polypropylene construction resistant to chemicals and corrosion. The Pentek DGD-2501-20 water filter has three times the dirt-holding capacity of similar sized sediment water filter cartridges. The Pentek DGD-2501-20 water filter is the same as the Everpure EV910840, Everpure DEV910840, Everpure 9108-40, Bunn S5-30, and ShurFlo 15-052-02 filter.