External doors are driven into more frequently than internal doors, e.g. by forklift trucks, so this is where the anti-crash protection system comes into its own. Downtimes and repair costs are considerably reduced. And the high speeds at which the door opens and closes saves on energy costs too.
The twin track rollers at the sides ensure quiet door travel and reliable stops. Even wind pressures of up to 70 km/h do not pose a problem thanks to the spring steel wind protectors.
