GeneralAire 6FM2020 - 20" x 20" x 5" Filter Media for MAC 2020, MERV 11

• Nominal Filter Dimensions: 20x20x5
• Approximate Filter Dimensions: 20-3/4" x 19-13/16" x 5-1/16"
  (Note: 19-13/16" Dimensions exclude 1/4" foam gasket on top and bottom of filter)
• GFI# 4556

The GeneralAire 6FM2020 is a MERV 11 filter designed for the MAC 1400, 2400G, and 2400P systems. MERV 11 filters will trap 85-90% of particulates sized at 3-10 microns, this includes dust, pollen, mold spores, and auto emissions.  Filter should be replaced every 6 Months.