Pentek R50-BB 50 Micron Big Blue 10 x 4.5 Whole House Pleated Sediment Filter | eBay
Amazon.com: 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: Replacement Water Filters: Tools &