Overhead door stops consist of two parts: the closing mechanism mounts to the door frame, and the arm attaches to the door itself. When the door opens to a certain angle, the closer arm will keep the door propped open. When the door is pushed past this adjustable angle, the closing mechanism will release and allow the door to close. These closers maintain airflow, allow entry and exit, and eliminate tripping hazards.

Electromagnetic door holders and releases consist of two components: one mounts onto a wall, while the other fastens onto the door. When an external power source activates a magnetic field, these component parts work in tandem to hold the door open at various angles. They are commonly used in fire safety systems to open or close doors and prevent the spread of smoke or flames.