Designed to replace the manual vent arm, the simple, oil-filled cylinder will automatically open and close your vent window as the temperature rises and falls. The Automatic Vent Opener will start to open as temperatures inside your greenhouse reach 68°F with full-open at 80 degrees. It installs quickly and easily and will provide care-free ventilation for your greenhouse. Fits all Palram greenhouses.
- Frame Material: Metal Greenhouses
- Panels: Polycarbonate Greenhouses