Generalaire High Efficiency Air Cleaner AC22.  Residential High Efficiency Air cleaner with media gage built in the door, simple to use and simple to service. The AC22 removes pollen, mold, dust, pet dander, grease, soot and tobacco smoke for cleaner, fresher air in your home. Features a MERV 11 Strung Expandable Media.  Strung Media allows for fast easy replacement.  Air Filter Gage Built in the Door (as filter media loads, the gage raises letting you know when it is time to replace the filter media.) 97% Efficient by weight of airborne particles ranging as low as 0.01 microns.  Cabinet Dimensions: 22-1/8” x 25-9/16” x 10”.

• Cabinet Dimensions: 22-1/8” x 25-9/16” x 10”
• Duct Opening Size: Inlet: 19-13/16” x 21-3/16”
• Outlet: 19-13/16” x 22”
• Filter Area: 77.1 sq. ft.