The Hydronix SDC-45-1010 Sediment Depth Cartridge is a 10 micron sediment filter. The Hydronix SDC-45-1010 Sediment Water Filter measures 9-7/8-inch x 4-1/2-inch. The Hydronix SDC-45-1010 Prefilter has graded density for higher dirt-holding capacity. Hydronix Water Technology SDC-45-1010 water filter cartridges are made of 100% pure polypropylene. Hydronix SDC Sediment Depth Cartridges are perfect prefilters for GAC filters, RO systems, DI Systems, ice machines, wineries, and many more.