Door frames should be solidly anchored to the rough opening. There are often spaces left between the rough opening stud at a point midway up the door jamb. These spaces create a poor anchorage for hardware making the door easy to kick open. If possible, the door molding should be removed and these spaces should be filled or “shimmed” prior to mounting any new lock strikes. If the entry door opens inward, the stop strip should actually be part of the wood frame, not applied. The stop strip is a wood strip installed on or milled into the door jamb (it’s the part of the jamb that.