• Nispira premium filter set compatible with Blueair Blue Pure 411, 411+ & MINI Air Purifiers.
• High quality HEPA filter capture 99.97% of airborne particles down to 0.3 microns.
• Activated charcoal filter helps deodorize any unfavorable household smell
• 4 Filters included. Dimension: 1.9 x 8 x 11.1 inches. Suggested to replace every 6 months for best performance.
• 100% customer satisfaction guaranteed. Quality meets or exceeds leading national brand