The Folger Adam 310-2 3/4OB electric strike is designed to be installed on the inactive leaf of a pair of doors. This application is typical when you have a mortise lockset on one door, and a vertical rod on the other door. If you choose to use a standard strike plate in this situation, you'll also need to install a door coordinator, to insure that the door with the mortise strike plate closes first.
Additional Series Information: