Remove the screws from the old lock on the inside of the door.
How to change lock on aluminium door.
Use a phillips head screwdriver to unfasten the two or three screws located on the inside knob plate.
This narrow stile deadlatch provides flexible traffic control during business hours.
Two lock cylinders on the exterior lock side stile make it easy to identify an aluminum glass door having both the pivoting deadlock and the deadlatch.
Remove the two screws from the latch plate on the edge of the door and remove the latch from the opening.
In some cases door latch plate mortises might need to be cut or enlarged.
You may also need to use a wire tool or a paper clip.
Begin by removing the screws from the door knob on the interior side of your door.
They offer a higher level of occupancy security and the ability to keep the door closed which lowers hvac costs.
This allows you to pull the door knobs off the door from both sides.