The AHMAC High-Efficiency, MERV 11 Charged-Media Insulated Air Cleaners are custom-designed to fit Goodman brand air handlers. The AHMAC removes air contaminants down to 0.3 micron and helps protect and prolong the operating efficiency of heating and cooling equipment compared to unit without enhanced air filtration products. Its perfect fit allows no air gaps, thereby maximizing the system’s ability to clean the air.