Bemis True HEPA Filter 1101 is rated to remove 99.97% of all airborne particles. First developed for the American space program, True HEPA Filters are used in hospital opreating rooms, high-tech laboratories, and other environments where maximum air purity is essential. These filters are designed to work with the Bemis Pre-Filter (#1102) to create the most effective air purifying system available.

When should you change filters? FilterWatch™ lets you know:
Look for the red light: Your Bemis True HEPA Air Purification System features the exclusive FilterWatch Sensor. FilterWatch accurately monitors your filter's condition. When one or both filters become blocked, FilterWatch alerts you with a bright red light - taking the guesswork out of filter replacement.

Test your filter periodically: FilterWatch operates on your unit's High setting. If you typically run your air purifier at a lower speed, test the unit periodically by setting it on High for at least 30 minutes. If the red light appears, it is time to replace the Pre-Filters and check the condition of the HEPA filters.

• Genuine Bemis Original Equipment.
• Contains two replacement HEPA Filters
• For use with Bemis True HEPA Air Purification System #200-001.