Solar Heat Activated Greenhouse Window Opener, Automatic Roof Vent with Temperature Control, Galvanized Steel Auto Vent Opener for Greenhouse Hothouse Sunroom

Color: Silver Material: Galvanized Sheet Size: Maximum Height to Open the Window: 18 in Package Includes: 1 x Automatic Window Opener Assembly Kit, 1 x User Manual Note: - Please refer to the measurement. Tiny measuring error is allowable in normal range. - There might be a little color difference due to the monitor, camera or other factors, please refer to the physical item.

• Hands-Free Greenhouse Ventilation: This automatic opener adjusts greenhouse windows according to temperature changes; providing fresh air without needing manual adjustments; ideal for busy gardeners
• Temperature-Activated Response: Reacts to temperature shifts; the cylinder opens/closes windows between 61-77℉ (16-25℃), fully opening around 86℉ (30℃); no electricity needed
• Adjustable Window Opening: Opens vents/roof windows up to 18 in, supporting outward-opening windows up to 15.4 lb; controlled movement prevents quick drops or banging
• Anti-Rust Galvanized Build: Crafted from galvanized sheet to resist corrosion in moist conditions; endures frequent use through the growing season; suitable for lasting use
• Multiple Uses: Suitable for greenhouse roofs, hothouses, and sunrooms needing airflow; reduces extra heat on hot days; follow instructions for correct setup and seasonal maintenance