About this item

• Compatible Models: The 411i Max, 411a Max, and F4MAX replacement filters are compatible with Blueair Blue Pure 411i Max, 411a Max, and F4MAX Air Cleaner to maintain their peak performance. Fit snugly with the machine. It works as well as the original with the same performance, keeping your 411i Max, 411a Max, and F4MAX Air Cleaner at its best working efficiency and capacity. Any use of the brand name or model designation for this product is made solely to demonstrate compatibility.
• Not Compatible Models: 411, 411+, and 411 Auto.
• Premium Material: Our 411i Max, 411a Max, and F4MAX replacement filter is made of high-quality non-woven fabric with premium True HEPA and activated carbon materials to greatly improve the performance of 411i Max, 411a Max, and F4MAX filter replacement. We adopt advanced lower energy consumption and lower density structure technology, higher efficiency, and less pressure to ensure high-efficiency filtration.
• 3-In-1 Stage Filtration System: Our 411i Max, 411a Max, and F4MAX True HEPA replacement filter is combined with a high-efficiency filtration system that has 3 layers of advanced filtration that removes high levels of fine particles and reduces odors. Fine Pre-filters can capture large particles of material such as hair, and pet plush. An extra protective layer of coating True HEPA filter captures 99.97% of airborne dust down to 0.3 microns in size, like dirt, dust, and pet dander. The activated carbon filter helps with household odors from pets, cooking, smoke, and so on.
• Replacement Frequency: 2 Pack 411i Max, 411a Max, and F4MAX True HEPA Filters fully meet your needs for the replacement of 411i Max, 411a Max, and F4MAX True HEPA Filters. To maintain optimal performance, We recommend that you replace your 411i Max, 411a Max, and F4MAX True HEPA Filter every 4-6 months. Meanwhile, the filter's usage time will depend on the environment and air quality around you.
• Easy Installation: It is fairly easy to install the 411i Max, 411a Max, and F4MAX air filters, no tools are required. Take out and replace your machine unit when needed.