1.   As the bolt tightens, it pulls the open wing mechanism against the backside of the wall to hold the anchor plate in place.

2.   If you cannot mount the anchor plates to the studs, you will have to secure them to the drywall.

3.   Put it through the anchor plate then drive it into the fastener attached to the door.

4.   Place the anchor plate on the bolt, then thread the wing mechanism onto the end.

5.   Position the anchor plate over the hole in the toggle flange and drive the retaining screw in place.

6.   Slip the anchor plate on the screw and drive the screw into the hole in the center of the plug.

7.   The anchor plates are bolted to the wall and the escutcheons are fastened to them with hidden set screws.

8.   Use one-and three-quarters-inch drywall screws to mount the anchor plates.