Translational roller shade system

A translatable roller shade system for mounting over a building opening, the roller shade system comprising:

• elongated first and second tracks that, when mounted, are positioned adjacent each other such that they extend horizontally in parallel from a first end of the roller shade system to a second end of the roller shade system, the tracks each having a channel that, when mounted, has a downward-facing slot extending along at least a substantial portion of the track between the first and second ends of the roller shade system;
• and
• first and second roller shades each comprising a tube, a shade wrapped on the tube, first and second roller brackets that support the tube at each end of the tube, and a length adjuster that connects between the tube and at least one roller bracket to enable adjustment of the roller shade between a lowered position in which the shade is lowered over the building opening and a raised position in which the shade is rolled up onto the tube so as to reveal the building opening;
• wherein the first and second roller shades, when installed, are supported from above by the respective first and second tracks for translational movement relative to the tracks and each other such that the roller shades can be moved left or right along the tracks between fully overlapped and minimally overlapped positions.