The installer attaches screws to the wall according to the mounting locations indicated on a paper template and subsequently slips the letters' rear keyhole slots over the screw heads, pushing down to lock them into position. This is the same method used to attach wall-mounted telephones. This ensures that the letters can't be dislodged from their mountings, which sometimes occurs when ordinary screws are used. Wood Plug, Rawl Plug or Lead Expansion Shield Inserted in Wall 1. Attach fasteners loosely to wall.
Slip keyholes over screws.