The main reason Lanz Cabinets went with a Schweiss hydraulic door was because they needed all the headroom they could get due to height restrictions on their side of the airfield because the control tower needed unobstructed line of sight. The door was the solution enabling them to build the hangar where it is. With a bifold door they would have had to build the hangar taller, resulting in higher construction costs.
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Lanz Hangar