Garden Greenhouse Window Opener Automatic Energ-saving Spring Vent

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Description :

- Solar heat sensing greenhouse automatic window spring opener .

- Made of stainless steel , heavy - duty , Maximum opening Load : 7 kg / 15 kg

- Working Principle : As the temperature changes automatically , thermal expansion and contraction , the black cylinder maintains the best growing temperature and prevents your greenhouse from overheating .

- Solar powered , automatic open or close the greenhouse vents as temperature rises or drops .

- - saving and eco - friendly , no eletricity needed .

Specification :

Material : Stainless Steel

Size : Approx . 38x10x5cm / 14 . 96x3 . 94x1 . 97inch

Maximum window opening : 45 cm

Maximum opening : 30 ° depending on adjustment and load

- Single Spring Kit :

Max . opening weight load : 7 kg

Adjustable open temperature range : 20 ° - 25 ° / 68 - 77F

- Double Spring Kit :

Max opening weight load : 15 kg

Adjustable open temperature range : 15 ° - 25 ° / 60 - 77F

Package Includes :

1 Piece Greenhouse Window Opener

Note :

Please do not use the opener where the temperature will exceed 50 ° ( 122F ).

Please do not remove the cylinder , the opener cannot be stopped by manual .

Greenhouse Window Opener ;Solar Heat Sensitive Vent Opener;Automatic Agricultural Windows Spring ;Greenhouse Window Roof Vent ;Adjustable Temperature Sensor Window Opean