Patent ID: 8677688

Claim:
A door system comprising: a) a first door leaf having a first horizontally disposed edge and a second horizontally disposed edge inferior to the first horizontally disposed edge; b) a second door leaf that opposes the first door leaf and having a first horizontally disposed edge and a second horizontally disposed edge inferior to the first horizontally disposed edge; wherein the first door leaf and second door leaf oppose each other within the same plane of movement; c) a modular alignment feature on the exterior surface of the first and second door leaves; d) a seal system comprising vertically extending finger stock; wherein said finger stock extends only along vertical edges of each of the first door leaf and the second door leaf: e) a rod-less cylinder in communication with the first horizontally disposed edge of the first and second leaves; and f) a an inverted channel adapted to receive a bearing that is stationary relative to the door leaf, wherein said inverted channel limits the first and second door leaves to a single plane of movement relative to an opening of an enclosure defining a door jamb and wherein said inverted channel is proximal to the second horizontally disposed edge of the first and second leaves.