All of the Novawall® profiles can be used in a multi-inch system. This type of system is typically used to control room acoustics. Novawall® uses fire treated wood furring to bring the system out to the depth required. The track system (½" or 1" whichever is specified) is attached to the furring. The furring and the track edges are wrapped so the wood is not exposed. Novawall Systems, Inc. uses this method as plastic extrusions thicker than 1" will probably not pass the ASTM E-84 tests. These site fabricated stretch fabric systems can be used on both walls and ceilings.