A paired reverberation chamber transmission suite comprising acoustically isolated source and receiving rooms for laboratory measurement of airborne and impact sound insulation. The facility accommodates wall, floor, door, window, façade, and partition specimens installed in a shared test opening between the two rooms. Available in both side-by-side and two-story configurations, the transmission suite is designed to comply with ISO 10140 and ASTM E90 for accurate sound transmission and transmission loss measurements