12 Pack of Replacement Air Filters for Mitsubishi Electric MAC-2300FT-E and MAC-3000FT-E Split Air Conditioners NO FRAMES ARE INCLUDED. USE YOUR EXISTING WHITE INSERT FRAMES WITH THESE FILTERS. Filter media dimensions: 8.3 in x 1.9 in x 0.2 in (21 cm x 4.7 cm x 0.5 cm). To replace: Remove the old filter element from its frame and insert the new filter element. The process is quick and easy. The new filter element is thicker than the original, ensuring improved fit and performance while maintaining full compatibility with the existing frame. 100% compatible replacement for Mitsubishi Electric MAC-2300FT-E and MAC-3000FT-E air conditioners. The upgraded filter retains full compatibility — simply replace the filter element inside the existing frame. Increased thickness improves fit and filtration efficiency. Black activated carbon filter: Enhances odor and airborne contaminant removal through advanced carbon adhesion technology. Long-lasting performance: Blue filter layer features ionized fibers produced via high-temperature oxidation. Dissolving enzyme is securely bonded to the fiber layer and does not shed, ensuring consistent performance over time. Recommended replacement interval: Every six months. Sticky activated carbon technology delivers extended service life and sustained deodorizing performance, outperforming traditional filters with larger pores and reduced efficiency. Includes 4 lytic enzyme filters and 4 activated carbon filters. High-density seamless construction ensures uniform enzyme distribution. Blue filter: Composed of dissolving enzymes and a pure fiber layer; ions are generated through controlled oxidation.