At the heart of the Frigo2 is their innovative double curtain low energy cost design. When closed the two curtains create a dead air space which is then treated with a small amount of heated air. This allows the curtains to remain frost free at the lowest energy expense. It also allows it to be either warm side or cold side mounted.
If the door curtains come out of their guides (for example, in the event of impact with a forklift) the system will automatically reset the curtain back into the guide on the next open cycle.