CL Single Spring Automatic Greenhouse Vent Opener adopts mechanical design and realizes the automatic window opening function through the internal temperature-sensitive wax column. When the temperature rises, the wax column expands to push the window open; when the temperature falls, it automatically retracts and closes, without external power supply.
Window opener adopts single spring structure, simple and reliable structure, easy to install, suitable for most small and medium-sized greenhouses. The window opening angle can be adjusted according to the needs to meet different ventilation requirements. The main body of greenhouse vent opener is made of rust-proof metal, with a normal service life of 3-5 years.
| Parameter | Details |
| Max Load Capacity | 7kg (15.4lb) |
| Max Window Height | 45cm (17.7in) |
| Temp Activation | 16-25°C (fully opens at ~30°C) |
| Color Options | Silver, Black |
| Material | Aluminum Alloy + Stainless Steel Spring |
| Warranty | 2 Years (Extendable to 5 Years for Bulk Orders) |
| Certifications | CE, RoHS |
Installation Process
Make sure the window has at least 45 cm of clear space to open. No obstructions in the way.
Use screws or clamps to attach brackets to the window frame and sash. Adjust the angle between 45° and 90°.
Connect the hydraulic cylinder to the brackets. Check that the piston rod moves smoothly. No blockages.
Turn the adjusting screw to set the temperature you want for opening. Make small changes. Test over and over.
Watch how it opens and closes automatically when temperature changes. Make sure it works smoothly. Opening angle is right.
Usage Guidelines
Service & Guarantee
