75/100 Micron (.003925") Ultra Fine strainer is great for keeping unwanted particles out of your water container. Made of high molecular weight high density polyethylene and the ultra fine mesh is 25 mil thick.

To be used with the 3.5, 5.0, 6.5 gallon Water Filter Systems ONLY!

NOTE:  A pre-filter is unnecessary when using a clean source of water such as a municipal source but is necessary when taking water from rivers and streams or water collected from pipes or hot water tanks as in a water-emergency.