Greenhouse Window Openers, Temperature Controlled Automatic Vent Opener, 2 Spring Heavy Duty New Uprated Piston, Up to 15 Kg Load Solar, For Greenhouse Garden Temperature Control ( Color : 2pcs )

Product description:This opener will automatically open and close your greenhouse windows to maintain optimal growing temperatures and prevent your greenhouse from overheating!Feature:2 spring automatic greenhouse windows roof vent opener heating kit glassThis vent opener comes with two springs - not just oneThis makes the vent opener stronger and more reliableDouble springs can lift up to 15 kgAdjustable vents: select the temperature between 15°c and 23°c and it will open when you chooseSpecification:Open temperature adjustable from 15°c to 23°c (59 f - 73 f)Full open temperature 35° (19 f) or aboveFully open 45 cm (18")Maximum open weight 15 kg (30 lb)Package1* Greenhouse automatic window opener (including screws)1*Installation manual

• 【Greenhouse Window Opener】: The window opener will automatically open and close your greenhouse windows to control the indoor temperature, we recommend you to buy two at a time
• 【Sturdy Design】: 2 springs make it very strong, suitable for most greenhouses, run free with solar energy
• 【Opening Temperature】: The temperature change in your greenhouse will trigger the opening device, the working conditions are - * Start to open - 15°c - 23°c (59f-73f) * Full open temperature 35° (19f) or above * Full open Distance 45cm ( 18") * Maximum open weight 15 kg
• 【Easy Installation】: Can be fixed on the aluminum frame, or screwed into the frame, including installation instructions, easy to install, adjustable to different temperatures, including screws for accessories (please make sure all accessories are tightened)
• 【Things to Remember】: Please make sure your greenhouse windows are free to open at least 45 cm (18 inches) We provide replacement parts for most items