Booster Nispira - HEPA Filter Charcoal Pre Filter for Holmes AER1 Total Air Filter, HAPF30AT for Purifier HAP242-NUC - Blue/

This 2-pack premium HEPA filter set is designed to be compatible with Holmes® aer1 Total Air Filters (HAPF30AT-U4R) and includes an additional 4 charcoal booster pre-filters. These filters effectively trap 99.97% of airborne allergens and contaminants, while the carbon booster filters help neutralize unwanted household odors—noticeably improving air quality. Compatible with AER1-ready air purifiers, this set replaces A, D, and K filters and fits a variety of Bionaire units including BAP260, BAP815, BAP825, BAP9200, BAP9700, and BAP520, as well as Holmes units like CAP531-U, CAP529-U, HAP240, HAP242, HAP412, HAP422, HAP424, HAP706, HAP716, HAP9240, HAP9242, HAP9412, HAP9414, HAP9422, and HAP9424. Each filter measures 1.2 x 10 x 4.6 inches and is easy to install—simply replace the used filter to maintain optimal performance. For best results, replace every 6 months. This is not a Holmes® OEM product; Holmes® is a registered trademark of its respective owner, used here solely to indicate compatibility. Customer satisfaction guaranteed—our quality meets or exceeds national brands.