Product review (5 stars): LARGER 1 CAPACITY AND QUICKLY FLUSHES CLEAN
Replaced ukf8001 equivalent filter in KitchenAid. This larger capacity 12 month / 1500 gallons filter fits connector perfectly. It is physically larger in diameter 2.25 " at twist on end and 2.00" diameter at opposite end. These are both 0.25" thicker than original that only does 6 months and 300 gallons.
Unlike other models this flushed clean quickly. Drown in cold water pot for 15 minutes, screw on then flush. This only took ( 6) 16 oz glasses for water to be perfectly clear with no bubbles or particles!!  (Unlike previous filter WSM-2 that took a rediculous (40) 16oz. glasses to become clear!). Don't forget to simply reset cartridge timer on refrigerator after 6 months.