GE Dual Stage Drinking Water Replacement Filters (Lead/Cyst/VOC) - FQSVN (formerly FQSVF/ FQSLF)Product Description (Note : Model FQSVF and FQSLF have been discontinued and replaced with model FQSVN. Model FQSVF and FQSLF is obsolete and no longer available from GE, model FQSVN will ship in it's place) Actual product may vary from product in picture Lasts 6 months or 1,200 gallons. With easy twist and lock technology, the FQSVN dual stage, under the sink water filter replacements are able to be installed without ever turning off your water. This