Greenhouse Automatic Vent Opener Window Height Sturdy Construction for Railways

Package List 1 x Automatic Vent Opener Characteristics -Size: About 34.00X12.00X5.00cm/13.36X4.72X1.97inch Greenhouse Auto Vent Opener -Material: Galvanized sheet, aluminum Auto Vent Opener -Color: Silver Greenhouse Automatic Window Opener -When the temperature changes, the vent opener can automatically stretch or contract the vent. Durable Automatic Vent Opener for Greenhouse Use -Auto-opening temperature range is adjustable from 15-25℃ by turning the cylinder. Automatic Vent Opener for Greenhouse -This automatic window opener is made of galvanized sheet and aluminum materials Sturdy Automatic Vent Opener. -The paint spraying aluminum frame looks more lustrous, durable and rust-proof Double Springs Automatic Vent Opener. -The window opener automatically opens and through the thermal induction of the temperature, maintains the growing temperature. Automatic Window OpenerGoods InformationAutomatic Window Opener for Greenhouse Ideal for your greenhouse window-opens and your greenhouse window as the temperature changes automatically, maintains the growing temperature and prevents your greenhouse from overheating. Auto Vent Opener Easy to install and use

• auto vent opener--it is and compact, very space saving,Durable Automatic Vent Opener for Greenhouse Use
• Automatic window opener for greenhouse--auto-opening temperature range is adjustable from 15-25℃ by turning the cylinder,Sturdy Automatic Vent Opener
• Double springs automatic vent opener--made of , very sturdy and durable,Auto Vent Opener
• Greenhouse auto window opener--the window opener automatically opens and through the thermal induction of the temperature, maintains the growing temperature,Greenhouse Automatic Window Opener
• Automatic window opener--can be clamped onto or screwed onto your greenhouse frame,Greenhouse Automatic Vent Opener