ICW is engineered for acoustical performance, range of capacities, and easy installation. One-inch deflection spring coils help improve transmission loss across a wide frequency range. Multiple spring coil capacities are available to help maximize hanger spacing so that the ceiling is level following installation. ICW’s sturdy hanger bracket aids installation as it holds the spring in place while fastening gypsum board to the grid system. Further, ICW’s channel clip secures standard, 16-guage cold-rolled-channel (CRC) and allows for leveling the ceiling grid system (CRC and 7/8-inch drywall furring channel, typically). And ICW also makes designing one-hour fire-rated assemblies easy. A single UL design number covers construction using dimensional wood joists, engineered wood I-beams, or open (parallel chord) trusses.