Skyfold is an acoustical wall that is hard, rigid and flat in its down
position. When not in use, however, it folds vertically for storage in
the ceiling. Developed as a modular system, it consists of a grid of
rectangular acoustical panels.
A completely functioning operable wall, tested in full accordance and
compliance with ASTM E90-90 shall achieve a Laboratory Sound
Transmission Class acoustical rating of not less than 51. The acoustical
panels, when tested in accordance with the ASTM E90-90 protocol, shall
achieve a Laboratory Sound Transmission Class STC rating of not less
than 54.
Each acoustical rating panel shall be individually removable using only
a screw driver. No special tools or equipment shall be required. The removal of a single acoustic panel shall not affect, dislocate or cause the
removal of any adjacent panels or other acoustical rating panels. The operable wall shall be mechanically operable with a few of the acoustic rating panels removed from one, or both sides of the operable wall.
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