Pentair Pentek DGD-2501 Big Blue Water Filter, 10-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 10" x 4.5", 1 Micron, Pack of 1

KEEP YOUR WATER CLEANER - Reduces dirt, sand, silt, and rust particles to help protect your appliances, water heater, and plumbing; spun from 100% pure polypropylene that will not impart taste, odor, or color to your water.

IDEAL HIGH-FLOW PRE-FILTER - Dual-gradient density traps coarse particles on the outer surface and fine particles toward the core, delivering up to 3X the dirt-holding capacity of similar-size sediment cartridges with very low pressure drop.

TESTED AND CERTIFIED - Rated at a nominal 1 micron and tested and certified by NSF International to NSF/ANSI Standard 42 for material requirements; polypropylene construction gives excellent chemical compatibility.

SIZED FOR BIG BLUE HOUSINGS - Measures 10" x 4.5" and fits all 10-inch Pentair Pentek Big Blue and other heavy-duty housings; drops in to replace any 10" x 4.5" sediment cartridge.

REPLACE EVERY 6 MONTHS - Change about every 6 months, or sooner when you notice a drop in water pressure or water quality; low initial pressure drop under 1 psi at 10 gpm keeps flow high.