ALPGATE Germany supplied four folding doors 4 x 4.2 for the Friolzheim fire department. The gate systems were fully glazed and designed with an integrated, threshold-free wicket door. One advantage of the ALPGATE folding doors is the small space requirement when open. Depending on the motor variant, the gates can also be folded up completely within a very short time. This happens almost completely silently, because the folding doors move on a carriage with ball-bearing rollers. Manual opening is also possible at any time.