YARNOW Automatic Greenhouse Window Opener Cylinder for Roof Vent Black

Package List 1 x Automatic Window Opener Features -Product Info:Automatic window opener -Material:Galvanized aluminum - Size: 29.50X1.50X1.50cm/11.59X0.59X0.59in -Color:Black -Automatic design, cost nothing to operate, user-friendly. The perfect workmanship will give you an excellent use experience replacement roof opener. -Convenient to use, greatly save your time and efforts. Automatically open greenhouse windows vent opener for greenhouse. -Thicker and stronger galvanized aluminum material, suitable for windy mountain area, resist wind. -It can supply a good temperature condition for plant's growth. Practical to use replacement vent opener. -Very sturdy for frame, looks nice and not rust. Can better promote growth Easy Install Vent Opener.Goods Informationgreenhouse window opener Ideal for your greenhouse window-opens and your greenhouse window as the temperature changes automatically, very convenient to use.auto window opener for greenhouse Maintains the best growing temperature and prevents your greenhouse from overheating

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