Dynemech Anti–Vibration Technology Open Spring Hanger Series DIH The Ceiling Suspended Vibrations Isolation for HVAC systems, pipes and ducts. Dynemech’s Open Spring Hanger Series DIH is designed to provide superior AntiVibration and Shock Isolation for Hanging Equipment’s. Whether it is an HVAC unit, pipe system or duct related, this suspension ensures that unwanted vibrations do not cause through the ceiling or supporting structures to keeping your space stable and ef iciently workable. It is designed for the ceiling mounted applications, DIH Series Spring are compact and powerful, providing a good durable suspension solution with a high level of Vibration Controlling, ideal for Vibration Sensitive environments. Why Choose the DIH Series?