Hydronix SPC-45-1010 Universal Whole House Sediment Pleated Water Filter, Washable and Reusable, 10 micron, 4.5" x 10" Sediment pleated cartridge technology - 10 micron Great chemical and bacterial resistance Pure 100 percent polypropylene pleated sheet media High dirt holding capacity 4.5X 9 7/8Fits most 4.5X 10housings