American Aldes Zone Register Terminals (ZRT®) are designed to introduce flexibility and dynamic control of central ventilation systems. Used in both large and small systems, the ZRT-SDIL zonally regulates ventilation without the need for individual fans. Each ZRT-SDIL is a combination register box, control damper, removable access plate, and optional flow regulator(s). This unique combination provides up to three different control schemes without the need for expensive pneumatic, electronic, or DDC control systems.

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