Application It is suitable for greenhouses, plant cultivation sheds, flower houses, etc. Specifications Material: Aluminum, Stainless Steel Color: Black, Silver Number of Items: 2 Assembly Required: Yes Working Temperature: 15°C-25°C/59-77℉ Maximum Opening Temperature: 30°C/86℉ Maximum Opening Distance: 45cm/17.72in Each Roof Vent Opener Load-capacity: About 7kg/15.43lbs Folded Product Size: 31.5*5*4cm/12.4*1.97*1.57in Package Size: 33*13*4.5cm/12.99*5.12*1.77in Gross Weight: 0.65kg/1.43lbs Net Weight: 0.55kg/1.21lbs Package Included 2* Automatic Roof Vent Openers All Accessories for Assembly.
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