Triangle Single Panel Manual Chain for PFG, VI, V, RV, RVI, VID Series

The Triangle IWS155 Manual Chain Operator is an accessory designed for PFG, VI, V, RV, RVI, VID Series. It provides manual pull-chain operation for one single shutter panel, allowing the shutter blades to be opened or closed as needed.

This chain operator is intended to be installed directly onto a compatible Triangle shutter assembly and does not function as a standalone airflow control device. When properly mounted, it mechanically actuates the shutter blades, enabling manual control of ventilation without electrical power.

The IWS155 is commonly used in industrial, commercial, and agricultural ventilation systems where manual shutter operation is preferred or required. For multi-panel shutters, one chain operator is required per panel.