12 Pack of Replacement Air Filters for Mitsubishi Electric MAC-2300FT-E and MAC-3000FT-E Split Air Conditioners NO FRAMES ARE INCLUDED. YOUR EXISTING WHITE INSERT FRAMES MUST BE USED 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, simply 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 , offering improved 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 and allows direct replacement of the filter element. The added dissolving enzyme layer increases thickness while ensuring consistent fit within the frame. Black carbon filter: Utilizes carbon adhesion technology to help reduce airborne odors and indoor air contaminants. Extended service life: Features a blue filter and activated carbon layer for long-lasting performance. The blue filter is produced through high-temperature oxidation and incorporates immobilized dissolving enzymes on the fiber layer, preventing degradation and maintaining filtration effectiveness over time. Recommended replacement interval: Every six months. This sticky carbon technology filter uses high-temperature ionic carbon, offering superior longevity and sustained deodorizing performance compared to traditional filters. Includes 4 lytic enzyme filters and 4 activated carbon filters. High-density, seamless belt design with dissolving enzyme technology. Blue filter: Composed of dissolving enzymes and a pure layer; oxidation ions are generated through high-temperature processing.