Nispira high quality, effective HEPA and carbon filters help to purify the air by capturing particulates. Particles 0.3 microns and larger that pass through the HEPA filter are captured to help maximize comfort and freshness.
These filters are compatible with the following Holmes air filter units: HAP242-NUC, HAPF300AH-U4R, HAPF30AT-U4R, CAP531-U, CAP529-U, HAP240, HAP242, HAP412, HAP422, HAP424, HAP706, HAP716, HAP9240, HAP9242, HAP9412, HAP9414, HAP9422 and HAP9424.
It can also be used with the following Bionaire units: BAP260, BAP815, BAP825, BAP9200, BAP9700 and BAP520. The HEPA filters measure 1.37 x 10 x 4.62 inches and the carbon filter measures 9.5 x 4 x 0.25 inches. 2 HEPA filters and 4 carbon pre filters are included.
We recommend replacing your air purifier filters every 6 months to maintain effectiveness and efficiency.