The Speed Door height limiters are intended to protect the edges of the thresholds of doors, as well as act of height limiters to prevent damage by impact of high level that such costs and are dangerous.

The height limiters, as well as warn the drivers of the vehicle or the load carrying are too high, prevent the damage by impact where there is a risk of high level, such as: upper pipes, cable brackets, supply lines of air or gas or ventilation ducts of tall vehicles, big loads of vehicles or masts of elevator forklifts masts.

In addition, when entries are installed roll-up doors, the height limiters protect impacts, the canals of the roll-up doors on the sides of the opening and the door itself closed in the top.