Hangar doors are often made of lightweight metal panels with metal frames (insulation is sandwiched between to metal sheets) resting on guide rails. At the sides of the door are what we call the "door panel parking area" where the panels are Small panels may have smooth surfaces but bigger panels more often than not has currugated surfaces (or slightly ribbed). The hangar doors are most of the time made up of many panels not just 2.
Currugated sheets (in scale) can be found in supply shops for architectural models.
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