Whirlpool 4396841 PUR Push Button Side-by-Side Refrigerator Water filter from Whirlpool – a reputed company producing thousands of electronic items for retailers, direct consumers globally. No doubt of certification as this product is certified by NSF. You are going to drink chlorine and odor free water which can be healthy as well as affordable compared to any bottled water. The model number 4396841 can be used for the model no. 4396842 and 8212650 for replacing water filters, you are advised to change water filter on the gap of every 6 months to get utmost performance from Whirlpool 4396841 PUR Push Button Side-by-Side Refrigerator Water Filter. You also get auto notification about when to change the filters so you don’t have to be worried about this thing.