Curtain fire damper

A damper door for sealing an open passageway in a planar wall, said damper door comprising:

• a frame having a pair of opposing guides for guiding said damper door, said pair of opposing guides being separated by a first and a second edge;
• a slidable rail mounted between said pair of opposing guides, said rail having a front side, a back side, and a sealing edge;
• a slotted opening in said slidable rail, wherein said slotted opening is cut along said sealing edge and extends through said front and back sides, and wherein said slotted opening is sealably conformable to a fixed object penetrating through said frame and mounted along said first edge of said frame;
• and
• a plurality of hingedly connected retractable panels, said panels mounted between said second edge of said frame and said slidable rail.

A damper system, said damper system comprising:

• a planar wall separating a first room from a second room;
• an opening in said planar wall, said opening providing passageway between said first and second rooms;
• a track extending through said opening for transporting objects between said first and second rooms, said track being fixed to a first edge in said opening;
• a retractable damper door mounted in said opening, said damper door being slidably positionable toward and away from said first edge in said opening;
• and
• a slotted opening cut along a sealing edge of said damper door, said slotted opening being sealably conformable around said track when said damper door is closed.