Systemair
Duct fans with rectangular or square connection for air impulsion and outlet. They have air volumes of 140-3350 l/s (504-12060 m 3/h). It has a housing made of galvanized steel sheet. Motors and impellers are mounted on the deck for easy cleaning and maintenance.
Additional has controllable speed by voltage reduction using a transformer, or controllable with a frequency converter using an effective sine filter of all poles.
It also has integrated thermocontacts with cables for connection to a motor protection switching device.
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