Pentair Pentek WP1BB97P Big Blue Sediment Water Filter 10-Inch Whole House Polypropylene String-Wound Filter Cartridge 10 x 4.5 1 Micron keeps your water clean and protect your appliances by removing dirt sand silt and particulates. It fits all 10 Big Blue Housing and can replace any 10 x 4.5 sediment filter. This is an economical solution to reduce fine sediment including rust sand and scale particulates. It has a high dirt-catching capacity and flow rates due to its string-wound construction. It is suitable for use in various applications including drinking water purification irrigation and industrial processes.