NW Acoustical 545 is able to achieve sound control up to an impressive unit STC 41. This system combines solid, single species wood framing and specialized gasketing with sound-enhanced glass to achieve optimal performance with the range of unit STC from STC 31 up to STC 41. Depending on the desired unit STC and glazing of the system, systems can reach heights of 9ˈ 10″ (3000 mm) and panel widths up to 3ˈ 3″ (1000 mm). NW Acoustical 545 with STC 41 qualifies for Enhanced Acoustical Performance IEQc9 (LEED for Schools) and EQc9 (LEED for Interior Design and Construction).