●Why do you choose it Waterdrop's NSF-certified MWF replacement refrigerator water filter provides you and your loved ones cleaner, healthier, and better-tasting drinking water at home. By reducing contaminants like mercury, toxaphene, p-dichlorobenzene, carbofuran, alachlor, benzene, lead, cryptosporidium, and giardia, the MWF is a safe and affordable way to contribute to a healthy lifestyle. ●When is it be replaced We recommend every 6 months or sooner, depending on how much you're using the water from your refrigerator. ●What certification does it tested by The NSF/ANSI 42 standards for the reduction of chlorine, tastes, and odors while retaining vital minerals beneficial to good health. We are proud members of the Water Quality Association. ●Replacement For GE Smart Water · MWF, GWF, GWFA, GWF01, GWF06, MWFA, WR02X11020 · WR02X11287, WR02X11290, WR2M3552, WR97X10006 Hotpoint · HWFA, HWF, MWF, MWFA Kenmore /Sears · 9991, 469991, 46-9991, 9996, 469996, 46-9996, 9905, 469905, 46-9905 ●What's in the box The WD-MWF filter*3 The instruction*1 The month label*3 ●By the manufacturer We provided multi packs to meet your different needs. We focus on quality and service, if you have any question please contact us without hesitate. CLICK THE "ADD TO CART" BUTTON NOW AND MAKE A DIFFERENCE IN YOUR WATER! START DRINKING HEALTHIER, GREAT TASTING WATER WITH WATERDROP TODAY!