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Media Air Cleaner, 7W x 22 5/8D x 21 5/16H Inch, MERV11

Model: GeneralAire MAC2020

Actual product may vary from photos.

Model: GeneralAire MAC2020

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If ordered by 1PM CST M-F, ships same day. All items on your order must be in stock for same-day shipping.

GeneralAire’s MAC Air Cleaners are designed to meet today’s high capacity filtration requirements to remove dust mites, mold spores, pollen and dust particles that pollute indoor air. The Opti-Fiber Cartridge Media is easy to replace by simply removing the door and sliding out the old Cartridge Media and sliding in the replacement. The media delivers a high initial efficiency, features fibers which are free of any chemical binders and is hydrophobic (does not absorb moisture), and resists shredding.

Select an air cleaner with dimensions that most closely match your furnace's or air handler's dimensions where the air cleaner will be installed. Most air cleaners attach to a furnace's side, or air handler's bottom or top (depending which is the air inlet). Therefore, select an air cleaner with a length that does not exceed a furnace's depth, or air handler's air-inlet dimensions. (Viewing an upright furnace or air handler from the side, depth is considered the space from left to right.) View online spec sheets for dimensions of furnaces and air handlers sold here. Your order will also include Alpine's exclusive Installation Video on DVD! Watch as a pro tackles the project from start to finish. You'll have all your questions answered as you see how easy it is to install yourself.

Also available is Alpine's Sheet Metal Transition Kit (AHA081). This kit allows you to adapt your existing return air plenum so you can fit in a new air cleaner, if you don't already have the space. The instructional video also shows you how to use the kit to make your air cleaner installation go smoothly. You can view the kit here.


  • 10 Year Cabinet Warranty.
  • MERV 11 Opti-Fiber Media.
  • Opti-Fiber Media with low pressure drop characteristics.
  • 75% dust spot efficiency 1.0 to 3.0 microns.

Click Here to watch a video demonstrating how to change your MAC air filter.

System Information
Mount Type
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Minimum Efficiency Reporting Value
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Rated Air Flow
1400 CFM
Product Dimensions
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7 Inches
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22 5/8 Inches
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21 5/16 Inches
Shipping Weight
14 lbs
Important Measurements
Opening Dimensions
18 1/2 D x 18 H inches
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DiversiTech 640-UL25 Foil Tape
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