2 Pcs Auto Roof Vent Opener Automatic, Greenhouse Window Opener, Greenhouse Heat Sensitive Roof Vent Opener Auto Vent Kit (Dual Spring Up to 30lbs)

Feature: Automatically opens and shuts greenhouse windows to maintain optimal growing temperatures and prevent overheating. Efficiently regulates internal climate for healthier plants. Specifications: Color: Silver Package Dimensions: 13.78 x 3.15 x 3.15 inches Item Weight: 1.76 pounds Package Include: 2 x Auto Roof Vent Opener Automatics

• Premium Material: Crafted with aluminum spray-painted cylinder, sturdy, weather-resistant, durable. Aluminum frame delivers sleek luster and long service life. Stainless steel accessories ensure stable, long-lasting performance for solar window opener.
• Wide Temperature Range: Opens greenhouse windows between 60°F–77°F using a solar heat-sensitive hydraulic cylinder. Reaches an 18-inch max opening for optimal airflow. Responds accurately to temperature changes; works reliably season after season. Do not use this opener anywhere the temperature will exceed 60° (140 f).
• Universal Heavy-Duty Greenhouse Window Opener: Compatible with most roof vents, side-hung & upward-hung windows for greenhouses, sheds, cold frames. Includes clamps & screws for easy installation. Sturdy construction effortlessly lifts reinforced PC panels.
• Convenient and Durable: No power, batteries or electricity required, can be used directly.
• Easy Installation: Maintenance-free greenhouse vent opener, smooth operation, fits most standard greenhouse frames, simple setup for all gardeners, ideal for effortless plant care.