Nispira ceramic ozone plates compatible with Airthereal MA5000 ozone generator. Ozone removes unfavorable household odor includes smoke, cooking, pet. Ozone output of these plates: 5000mg/h. 8 packs included. Each plate will last about 2500 hours. Airthereal is a trademark or registered trademark of its respective holder. This is not a Airthereal OEM product. Use of it does not imply any affiliation with or endorsement by the holder. Any use of the name Airthereal or model designation for this product is made solely for purposes of demonstrating compatibility.