IWS3187 Triangle Fans Electric Shutter Operator Designed to Work With Triangle Engineering Iws Series and Riws Series Shutters 115/230 Volts

Designed to work with Triangle Engineering IWS Series and RIWS Series Shutters (two required if used for double panel models).

Note: Triangle’s supply shutters must be equipped with an operator. Shutter must be opened before fan is energized.