Filter-Monster True HEPA Replacement for Whirlpool 1183900 Filter
Whirlpool Whispure Air Purifier Models: APT30010M, APT40010R, APT42010M, APT50010M and APMT2001M
We trust our products so much that when you use a Filter-Monster branded filter in your air purifier, we offer a 1-year extended warranty on your air purifier. No forms to fill out, no registration process. All you have to do is use our filters. That's right - we've got you covered even after the manufacturer's warranty expires!
Some limitations apply. Read full warranty here.