This is a Pre filter housing unit in which you can install in any RO/UV Water purifier. Your tap water would be pre-filtered first before being filtered again in your water purifier. In addition to filtering out a particular contaminant this may also extend the life of the filter in your water purifier. This housing unit has standard 1/4" fitting holes. Use this to pre-filter water for enhancing the life of RO machine. Must for RO/UV Machine. Benefits of Installing Pre-Filter 1. It stop mud, rust, silt and all physical impurities from raw water 2. It enhances life of your water purifier RO Membrane and all in line filters 3. Reduces RO Membrane damage and save money, The pre-filter set is made with high quality filtration components to protect and prolong the lifespan of your reverse osmosis system, 10 inch industry standard size filter to protect and extend the life of the Reverse-Osmosis-System and Useful for all kind of r.o./u.v./u.f. water purifier having 1/4" fittings.