45i Replacement Filter Compatible with BreatheSmart 45i and Flex Air Purifier, 3-in-1 H13 True HEPA+ High-Efficiency Activated Carbon Filter+ Pre Filter, B4-Pure, 2 X True Hepa+4 X Carbon Filter

This 45i replacement cartridge is exactly what I needed for my air purifier. The quality is excellent—it fits perfectly, works just as well as the original, and helps keep the air in my home feeling clean and fresh. What really makes this a great buy is the affordable price without sacrificing performance. It’s a solid option for anyone looking to maintain their purifier without overpaying for name-brand filters. I’ll definitely be purchasing this again when it’s time for the next replacement!

Good price and fast shipping. I had no issues with this product.

They’re a perfect fit for my Allen air purifier for a very good price and come two to a package. Excellent filters.

Much cheaper than originals but seem to work well

Works as well as OEM at half price.