705026

United Filter International String Wound Cartridge Filters provide true depth filtration, high dirt-holding capacity, and extremely low media migration. They are a superior, one-piece cartridge manufactured using a high speed continuous wind process and are available in a wide variety of lengths and porosities. The precise winding pattern defines micron ratings and results in higher dirt-holding capacity and efficiency. Our UPDN Series of polypropylene string cartridges are NSF/ANSI 42, 61, and 372 certified.