Pentair Pentek Dgd-5005 Big Blue Sediment Water Filter, 10-Inch,, 5 Micron. Pentair Pentek DGD Series Cartridges are manufactured from 100% pure polypropylene and are sized for use in Pentair Pentek Big Blue Filter Housings (and other heavy duty filter housings). DGD Series Cartridges are designed for purity and will not impart taste, odor or color to the liquid being filtered. Additionally, the polypropylene construction provides superior chemical resistance and is not prone to bacterial attack. The DGD Series' advanced design combines selective final filtration with appropriate pre-filtration to achieve up to three times the dirt holding capacity of similar size sediment cartridges and even greater capacity than standard spun or string-wound cartridges. The larger diameter of the filter reduces the particle load, allowing it to operate at higher velocities. The effective filter depth is increased to a full 233%. This increased depth provides very high particulate reduction efficiencies and added loading capacity. The design and performance characteristics of the DGD Series Cartridges make them an excellent choice for all residential, rural, municipal and commercial applications. KEEP YOUR WATER CLEAN and protect your appliances by removing dirt, sand, silt and particulates FITS ALL 10" Big Blue or other heavy duty housings and can replace any 10" x 4.5" sediment filter cartridge ACHIEVES UP TO 3X the dirt holding capacity of similar size sediment cartridges NSF CERTIFIED for your peace of mind REPLACE EVERY 6 MONTHS or when you notice a drop in water pressure or quality