Compatible with Vornado Air Purifiers model AC300, AC350, AC500, AC550, PCO200, PCO300, PCO375DC, PCO500, and PCO575DC Contains Two (2) MD1-0022 H13 Grade Replacement Air Filter H13 Grade air filter captures 99.97% of all airborne particles down to 0.3 microns in size, creating fresh and purified air for you and your family Using Flintar high-efficient air cleaner filters and replacing the filters regularly will help optimize air cleaning performance Replace your filter every 6-12 months, depending on use and environment This MD1-0022 Replacement Filter is made with higher grade H13 air filter and is fully compatible with *Vornado Air Purifiers. This filter traps 99.97% of harmful airborne particles down to 0.3 micron in size that pass through the filter.

Fully compatible with the following Vornado Air Purifiers:
- AC300 (AC1-0015-06)
- AC350 (AC1-0038-43)
- AC500 (AC1-0016-06)
- AC550 (AC1-0039-43)
- PCO200 (AC1-0019-43)
- PCO300 (AC1-0017-06)
- PCO375DC (AC1-0042-43)
- PCO500 (AC1-0018-06)
- PCO575DC (AC1-0043-43)

Please note that Model AC500, AC550, PCO500 and PCO575DC require 2 filters

Using high-efficient air cleaner filters and replacing the filters regularly will help optimize air cleaning performance. Maintain the health and comfort of you and your family. Replace your filter every 6 -12 months depending on usage and your environment.