The wind opens the ventilation window automatically

Negative pressure automatic opening wind window, open and close sensitive and convenient, automatically maintain indoor and outdoor pressure difference (automatic opening pressure can be adjusted freely) and can make the outside light become soft, the plate adopts domestic products, good light transmittance and not easy to deformation.

Products Details

 

Negative pressure ventilation

 

Stainless steel shaft

 

Hot dip galvanized counterweight

 

The light is downy

 

Support for custom

Rotating shaft adopts solid stainless steel light circle, opening and closing is stable and reliable. Pulling and opening parts can be added to control opening and closing by winch. Black counterweight block surface after 6 times of treatment, eliminate rust, the overall more beautiful. Various sizes can be customized to meet customer needs.

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