Author: Jim Leslie, general manager, and Kevin Smith, registered architect and director of product application and development, EXTECH/Exterior Technologies, Inc.

Wind-driven facade systems add dynamic movement to building enclosures and wall systems. Responding to air currents, the flapper-panel design creates the look of rolling waves across the wall. These systems are suitable for both small- and large-scale projects. Popular applications include transit and parking facilities, cultural institutions, entertainment venues, and artistic installations.