This filter is only compatible with the ComfortPure™ 3-in-1 T10i air purifier. Find the Blueair model name on the label inside your air purifier. Designed for easy replacements, ensuring hassle-free maintenance Crafted with durable materials for a long-lasting filter Effectively captures allergens like dust, pollen, and pet dander Accurate filter lifetime tracking Blueair's proprietary RealTrack algorithm accurately calculates the remaining filter lifetime based on fan speed, usage time and pollution levels. Depending on usage, your filter will last up to 9 months. It’s important to change your filter when needed because dirty filters clean the air less efficiently, reducing the purifier's ability to capture pollutants and affecting overall air quality in your space. Pre-filter Captures larger particles like hair, dust & dander Main FilterCaptures airborne particles including, PM 2.5, pollen, dust mite matter allergen & pet dander allergen Activated Carbon Traps light household odors from smoke, cooking odors and more