... .Usage: Suitable for outdoor Water fliter,home water filter/purifier system, gravity filteredCan effectively resolve the bacteria ... problems of household water filter Filter fineness:0.2 micronSize:46mm×250mm Outlet18mmWorking temperature:5 ... Units/20’ container : 20,000-25,000PCSQty of Units/40’ container : 50,000-55,000PCS Dual ceramic membranes filter element