Lixada Greenhouse Automatic Vent Opener Temperature Sensitive Double Spring Iron Auto Window Opener with Paint Spraying

Automatic vent opener maintains greenhouse temperatures effectively Opens and closes automatically between 15-25℃ (60-77℉) Prevents greenhouse from overheating, maintaining optimal growing conditions Wide applicability, fits most aluminum frame greenhouses The temperature is adjustable from 15-25℃ (60-77℉) by turning the cylinder High quality, durable and rust-proof aluminum and stainless steel construction Able to lift up to 7kg / 15lbs with its impressive load bearing capabilities Black in color, blends seamlessly with any greenhouse setup Open distance reaches up to 45cm / 17.71inch for wide ventilation range Comes with a cylinder, accessory package and English manual for easy installation.