Mr. Heater Filter Kit for 2009 or Newer Kerosene Forced Air Heater Fits the following heaters - 2009 models - Current MR. HEATER - MH50KTR; MH75KTR; MH125KTR,; MH175KTR; MH210KTR Fits the following heaters - 2009 models - Current MR. HEATER CONTRACTOR SERIES: TS75KR; TS125KTR; TS175KTR; TS210KTR Fits the following heaters - 2009 models - Current - MR. HEATER CONTRACTOR PLUS - PA50KR; PA75KTR; PA175KTR; PA210KTR 1 Year Warranty Easy to Replace