The window guards are fastened with self-tapping screws. 
 -  Photo courtesy of Gamber-Johnson

The window guards are fastened with self-tapping screws.

Photo courtesy of Gamber-Johnson

Gamber-Johnson's metal mesh window guards have been redesigned for the 2020 Ford Police Interceptor Utility. The window guards are designed for use on the rear driver- and passenger-side windows.

This product line was designed with safety and reliability in mind. Self-tapping screws are used to fasten the product into the windor frame of the door.