Replacing a used filter cartridge with a new one is easy and does not require any tools:
- Unscrew the female threaded swivels from each end of the filter, then pull it from the snap-in bracket. 
- Press the new filter into the snap-in bracket and screw the hose swivels onto the male threaded ends of the filter. 
- You’re back in business.
Notes:
- The filter allows airflow in either direction. 
- Do not allow the inside of the filter to get wet.