5.Align the assembled Upgrade Kit frame with the filter rails in the air cleaner housing and slide the frame completely into the air cleaner.

Filter rail in housing

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6.Bend the appropriate locking tab to lock the frame into place at the top and bottom.

NEW STYLE MODEL 2400 & ALL 2200s

OLD STYLE MODEL 2400

7.For “New Style” Model 2200 and 2400 air cleaners (see illustration at right), press the Styrofoam door liner into the center of the door. For “Old Style” air cleaners, the door liner is not needed.

Install door liner

(“New Style” air cleaners only)

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Aprilaire 1213, 1413 installation instructions Install door liner New Style air cleaners only