The Hydronix SDC-45-1050 polypropylene sediment filter is a 50 micron rated filter. Its universal standard size fits any standard Reverse Osmosis, Whole House System, DI, Under-sink or Counter Top Filtration systems. Used in Residential, Commercial or Industrial applications. Its outside diameter (OD) measures 4.5" and overall length is 10". It is made of polypropylene which can be sterilized, has dimensional stability, and is resistance to most chemicals. It is certified by the American National Standards Institute and National Sanitation Foundation (ANSI/NSF) Standard 42 for quality assurance, and is FDA approved. This sediment filter is suitable for use in applications such as ice machines, film processing, beverage, coffee, analytical, wineries, and many others.