The Tier1 DGD-5005-155357-43 comparable replacement cartridge features a dual-gradient density design with a 5-micron nominal rating. The outer layer captures larger sediment particles while the inner core traps finer particles down to 5 microns, extending the filter's service life compared to single-density cartridges. This makes it ideal for reducing dirt, sand, silt, rust flakes, and scale particles from well water and municipal water supplies.

This Tier1 spun polypropylene cartridge measures 10 inches in length by 4.5 inches in diameter (10" x 4.5"), making it a Big Blue-sized filter. It is engineered as a direct comparable replacement for the Pentek DGD-5005-155357-43 and fits standard 10" Big Blue whole-house filter housings. The included O-ring and food-grade silicone lubricant ensure a proper, leak-free seal upon installation.

The filtration life of this Tier1 dual-gradient cartridge is typically 3 to 6 months, depending on your incoming water quality, sediment load, and household water usage. Homes on well water or with high sediment levels may require replacement closer to the 3-month mark, while municipal water users often achieve the full 6 months. Monitor water pressure drop as the primary indicator that replacement is needed.

The Tier1 spun polypropylene cartridge is manufactured from FDA-compliant, food-grade polypropylene and is tested against NSF/ANSI Standard 42 criteria for materials safety and sediment reduction. The 100% pure polypropylene construction contains no binders, adhesives, or surfactants, ensuring it does not introduce contaminants into your water while effectively reducing particulate matter.

This kit includes one Tier1 DGD-5005 comparable 10" x 4.5" dual-gradient spun polypropylene cartridge, a replacement O-ring, and a packet of food-grade silicone lubricant. To install: shut off the water supply, depressurize the housing, unscrew the sump, discard the old cartridge and O-ring, clean the sump, apply lubricant to the new O-ring and seat it in the groove, insert the new Tier1 cartridge with the gradient-density side facing outward, hand-tighten the sump, and slowly restore water flow while checking for leaks.