Greenhouse Replacement Cylinder Auto Vent Opener Non Electric Solar Energy Temperature Sensitive

This automatic greenhouse vent opener is designed for gardeners seeking a practical solution to maintain optimal growing conditions in their greenhouses.

• Non-electric operation utilizing solar energy for automatic vent control.
• Opens at temperatures above approximately 25 degrees and closes below approximately 15 degrees.
• Can lift up to 15 lbs, ensuring reliable vent operation.
• Helps prevent overheating by adjusting vent openings based on temperature changes.

• Temperature range: Closes below approximately 15 degrees, opens above approximately 25 degrees.

• Replacement cylinder only.
• Choose from multiple options based on your greenhouse size and requirements.