Replacement part compatible with the following Holmes and Bionaire air purifier models: Compatible with Holmes models: HAP412, HAP422, HAP424, HAP702, HAP706, HAP716, HAP1702, HAP2400, HAP9240, HAP9241, HAP9242, HAP9243, HAP9412, HAP9413, HAP9414, HAP9415, HAP9422, HAP9423, HAP9424, HAP9425 Compatible with Bionaire models: BAP260, BAP520, BAP815, BAP825, BAP9200, BAP9700 Key benefits and what this product delivers: Restores designed performance: replaces worn or expired components to your air purifier to the manufacturer's intended operation and airflow. Reliable fit: made to match the original dimensions and mounting points of the listed Holmes and Bionaire models, minimizing installation issues. Consistent indoor air support: helps maintain the unit's ability to reduce airborne dust and particles when used as a recommended replacement component. Simple maintenance solution: swapping this part keeps your purifier operating effectively without the need to the entire unit. Important attributes: Function: direct replacement component for the named Holmes and Bionaire air purifiers, intended to restore or maintain proper operation. Compatibility: explicitly designed for the full list of Holmes and Bionaire model numbers shown above. Size and fit: engineered to match original equipment size and connection points for the compatible models. Quality and performance: manufactured to provide consistent, repeatable fit and function so the purifier can perform as expected. Practical use scenarios: Allergy season: the part before peak pollen periods to keep your purifier working efficiently in bedrooms and living areas. Home with pets: swap the component regularly to help manage pet dander and maintain steady airflow in shared spaces. After renovation or cleaning: install a fresh replacement after dustproducing activities to prevent strain on the purifier and preserve indoor air quality. Notes: Confirm your purifier model number matches one listed above before . For installation details and recommended replacement intervals, refer to your air purifier's user manual.