![Grain Unloading Facility](https://assets.nlcnet.net/0609/images/Portfolio/_imageLarge/grain-unloading-facility-header.jpg)
The Four-Fold doors were used as part of a dust control system at this grain unloading facility. High-speed, high-cycle doors that created a tight all-over seal were a must to meet the capacity requirements for when the trucks pulled into the bay and the grain was unloaded.
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