Temperature Sensitive Automatic Window Opener Cylinder Automatic Greenhouse Window Opener Cylinder

& High QualityFully automatic greenhouse ventilationEasy fitting by or screws providedNo batteries or electricity requiredWith the automatic window openers, you can be of an even temperature in your greenhouse day and night. They allow thermostatic ventilation control through the roof windows of your greenhouseMaterial: aluminium alloycolour: blackPackage Contents: 1 x Window Opener CylinderOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.