12 Pack of Replacement Air Filters for Mitsubishi Electric MAC-2300FT-E and MAC-3000FT-E Split Air ConditionersNO FRAMES ARE INCLUDED. YOUR EXISTING WHITE INSERT FRAMES MUST BE INSTALLED WITH THESE FILTERS. Dimensions for filter media: 8.3Inch x 1.9Inch x 0.2Inch (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 Old Filter Element Is Relatively Thin, Our New Version Is Thicker, So We Also Follow The Update Of The New Version, And Just Replace The Filter Element Inside.100% guaranteed compatible replacement for Mitsubishi Electric MAC-2330FT-E and MAC-3000FT-E filters. The Upgraded Filter Maintains The Compatibility And The Filter Element Can Be Replaced Directly! Increasing The Dissolving Enzyme Layer Also Increases The Thickness Of The Filter Element. Better Compatibility And More Consistent With The Size Of The Filter Element Frame.Black Carbon Filter: Carbon Adhesion Technology Plays A Key Role In The Air Filtration Cycle, Helping Us To Clean The Inside Of The Air Conditioner And The Air Odor And Harmful Substances In The Air Conditioner Indoors. We Highly Recommend This Technology.Extra Long Life And Vitality: Blue Filter And Activated Carbon Stick For Extra Long Life. The Blue Filter Is An Ion Produced By High-Temperature Oxidation. The Dissolving Enzyme Is Fixed On The Fiber Layer And Will Not Fall Off For A Long Time, Maintaining The Dissolving Ability, So The Lifespan Is Very Strong!Usually Change It Every Six Months! The Sticky Carbon Technology Filter Is A Type Of High-Temperature Ionic Sticky Carbon. In Addition To Its Ultra-High Lifespan, It Can Maintain The Deodorizing Filtration Effect For A Long Time, Changing The Large Pores And Poor Performance Of Traditional Old Filter Elements!4 Lytic Enzyme Filters And 4 Activated Carbon Filters High-Density Seamless Belt Dissolving Enzyme (This Is Very Important) Blue Filter: Composed Of Dissolving Enzymes And A Pure Layer, The Oxidation Ions Produced By