Mitsubishi MAC-408FT-E OEM replacement filter for the following Mitsubishi ductless mini split units: MSZ-GE06NA, MSZ-GE09NA, MSZ-GE12NA, MSZ-GE15NA, MSZ-GE18NA, MSY-GE09NA, MSY-GE12NA, MSL-GL15NA, MSY-GE15NA, MSY-GE18NA Mitsubishi MAC-408FT-E Enzyme Filter is a two pack of replacement air filters for Mitsubishi Mr. Slim heat pump and air conditioning split systems. The Mitsubishi OEM or Original Equipment Manufacturer air filter is a blue enzyme filter that attaches to the unit's plastic framed pre-filter. The filter captures airborne particles and traps fine dust that the larger post-filter may not catch. The Mitsubishi MAC-408FT-E air filter should be changed once every four months. One pack contains 2 filters