Abstract: A high-speed door assembly for selectively permitting and prohibiting access through an opening in a wall, or other blocking structure, the door assembly having a shaft or drum located proximate the wall or other blocking structure and outside of the opening, and the shaft or drum having a longitudinal axis, and, a flexible door panel attached to the shaft or drum so as to be capable of being wound and unwound about the drum for selectively permitting and prohibiting access through the opening, the door panel being wound on the shaft or drum in an orientation such that the door panel defines at least one vertical plane when unwound from the shaft or drum, the vertical plane being spaced farther from the wall than the longitudinal axis of the shaft or drum is spaced from the wall or other blocking structure.

Abstract: A draft arrester for an overhead door. An exemplary embodiment may include a flexible draft curtain extending between a ceiling structure and a wound-up portion of the overhead door. The draft arrester may include a follower assembly, which may include one or more rollers arranged to roll against the overhead door. An exemplary embodiment may include a repositionable arm arranged to press the rollers against the wound-up portion of the door.