Skyfold is a unique, vertically folding acoustical retractable wall that neatly stores in the ceiling when not in use. In the down closed position, Skyfold is a two sided, hard, rigid wall with an STC rating up to 60 RW 59. Unlike conventional operable walls, Skyfold is fully automatic and does not require manual operation. Skyfold does not take up valuable floor space for storage pockets and does not require wall, Building Materials, Home Improvement ...