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Features:
Cannot be used in automatic ventilation window device of greenhouse temperature above 50 ℃ environment. 
Please make sure that your normal greenhouse window open and no block.

Product Specifications:
Material: galvanized sheet
Product weight: 437 g (about)
(The window opening to the outside world)The maximum height: about 45cm/17.72".
The ventilation window does not exceed the maximum weight of 7 kg. 
Adjust the temperature automatically among 15 to 25 ° C.

1 X Window Open Device