Assuming you are referring to a screens for doors, the following instructions should help.
To cut a track screen:
1. Measure the door opening and add 2 inches to each side to allow for overlap.
2. Cut the screen material to size using a utility knife or scissors. Be sure to use sharp blades so that you get a clean cut.
3. Lay the screen material over the door opening and insert it into the track at the top of the doorframe.
4. Use a rubber mallet or your hands to gently tap the screen material into place until it is fully seated in the track all around.
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