Blueair Signature SP1i Replacement Filter

This filter is only compatible with the Blue Signature™ SP1i Designed for easy replacements, ensuring hassle-free maintenance for continuous clean air Crafted with durable materials for a long-lasting filter Effectively captures allergens like dust, pollen, and pet dander Alerts when you need a new filter with RealTrack filter monitoring that doubles* the filter lifetime. HEPASilent filtration technology captures at least 99.97%² of tiny airborne pollutants down to 0.1 microns while OdorFence Technology captures common odor gases and breaks them down. It’s deep, effortless clean air you can feel, and smell, every day.