The RSIC-WHI® is designed for use with any wood, steel or concrete application where a dropped drywall ceiling is required. The RSIC-WHI isolator installed mid-wire between the structure and a drywall grid ceiling, or CRC and hat channel ceiling. The RSIC-WHI Isolator has acoustical design load ratings of 30, 50, 70, 100, 145, and 220 lbs per isolator.