Remove the threshold from the bottom of the pet door frame.
Step 2Remove the Retainer Clip
Remove the retainer clip from the flap.
Step 3Install the Flap Magnets
Add the additional magnet in one of the slots in the bottom of the flap and put the retainer bottom back on.
Make sure the retainer bottom is pushed all the way up so that the molded nubs are sticking through the cut out in the retainer clip.
Step 4Locate the Wrapped Magnet
Take the magnet that is wrapped and stick it onto the bottom of the flap so that it is attracting to the one that you just inserted into the flap.
Step 5Install the Wrapped Magnet into Threshold
Slide the wrapped magnet into the threshold.
Use a pencil to push it into the threshold so that when the threshold is installed back in to the frame the new magnet will line up with the one in the flap.
You can easily gauge how far to push the magnet by using the pencil to measure.
Step 6Reinstall the Threshold
Push the threshold back into the frame.
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