Lennox 98X75 V.O.C Cannister and Foam Pre-Filter for Healthy Climate 40 & 60 Hepa Air CleanerLennox Healthy Climate 98X75 Replacement V. O. C Canister and 1 Foam Pre Filter For Healthy Climate HEPA 40 and HEPA 60 Air Filtration Systems 100% carbon canister, more effective than 92X09 2 Year average lifespan for canister Washable Resuable Foam Pre Filter, can be used instead of X4138 One VOC Canister and One Foam Pre Filter