Breathe Fresh, Live Better! 🌱 Designed specifically for Surround Air Intelli-Pro XJ-3800. Experience cleaner air with 99.97% filtration efficiency. Activated carbon pre-filter eliminates unwanted household odors. Join countless satisfied customers with our quality assurance. Extend the life of your HEPA filter with our dual-layer design. Replace every 6 months 99.97% particle capture 0.3 microns filtration The Nispira Replacement HEPA Filter is a premium air purification solution designed for the Surround Air Intelli-Pro XJ-3800. With a remarkable 99.97% efficiency in capturing airborne particles as small as 0.3 microns, this filter not only enhances air quality but also features an activated carbon layer to neutralize odors. Measuring 13 x 11 x 1.25 inches, it is recommended to replace the filter every six months to maintain optimal performance. Enjoy peace of mind with a 100% customer satisfaction guarantee.