• Replacement washable hospital grade HEPA filter

• Generally lasts one year +/- with proper cleaning. Replace when cleanings no longer restores air flow.

TIP! - Use your new high performance filter with HEPA installed for 24hours. Remove and inspect after first or second day. If cleaning is needed clean, perform as instructed (using 50/50 water and alcohol). Do not install still wet filter. Dry with hair dryer before re-installing. After a day to three days, cleanings can be spread further and further out.