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 INSTALLED WITH THESE FILTERS. Dimensions for filter media: 8.3 Inch x 1.9 Inch x 0.2 Inch (21 x 4.7 x 0.5 cm). When replacing, you only need to remove the filter element in the old frame and replace it with the new filter element. Replacement process is quick and easy. The new filter element is thicker than the original, ensuring improved fit and performance while maintaining compatibility. 100% guaranteed compatible replacement for Mitsubishi Electric MAC-2300FT-E and MAC-3000FT-E filters. The upgraded design allows direct replacement of the filter element. Enhanced construction improves fit within the existing frame. Black Carbon Filter: Utilizes carbon adhesion technology to help capture airborne odors and certain harmful substances, contributing to cleaner indoor air quality. Extended Filter Life: Features a blue filter layer produced through high-temperature oxidation. The enzyme layer is securely bonded to the fiber material and designed not to shed, helping maintain filtration efficiency over time. Recommended replacement every six months. The activated carbon material is designed for long-lasting odor reduction and improved filtration performance compared to traditional filters. Includes 8 filters: 4 lytic enzyme filters and 4 activated carbon filters. High-density seamless construction helps ensure consistent filtration. Blue filter layer contains dissolving enzymes and a pure layer, enhanced with oxidation ions for improved performance.