COMPATIBLE REPLACEMENT: This 10 Micron 20 x 4.5 sediment water filter is a replacement for Hydronix SDC-45-2010 and fits most 20 inch water filter housings. HIGH QUALITY FILTRATION: The high capacity spun wound polypropylene sediment filter is able to achieve filtration down to 10 microns improving water quality, at a flow rate of 20 GPM, reducing sediment, rust, dirt, sand, silt, and corrosion. 3 MONTH FILTER LIFE: Depending on the quality of your water, replacing your home water filter cartridge every 3 months is recommended for the average household to ensure optimal performance. DURABLE MATERIALS AND DESIGN: Tier1 products undergo strict quality assurance testing and are manufactured using the highest quality materials. QUICK & EASY INSTALLATION: Simple and easy universal fit into your 20 x 4.5 Inch whole house water filter system.