MT.Purity Refrigerator Water Filter Compatible with ED-R1RX-D1 W10-2953-70A Filter 1 Ken-More 46-99-30 Pack 3,Blue) For the model of the refrigerator water filter, please see Figure 3 NSF AND SERVICE LIFE--Certified by IAPMO RT to NSF/ANSI 42 for chlorine reduction;The real filter life span depends on water quality and level of contaminants ,but for best filtration results, please Replace filter every 6 months or 200 gallons to maximize contaminant reduction. QUICK INSTALLATION AND EASY REPLACEMENT: Installing this filter in only few min. It's easy to install, just aim at the direction. SINCERE SUGGESTION: Flush 4 to 5 gallons of water through MT.Purity cartridge before using.If you still have any questions, please contact us.ded AFTER-SALES GUARANTEE:If you have any unsatisfied with MT.Purity,please contact us immediately.We will provide an alternative or completely refund.We just want to let you love it,this is MT.Puritys purpose.