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Product description
Wide Selection – Different Materials and Styles for You to Choose from 
Available in either galvanized steel or stainless steel, with options for both single and dual spring configurations.
Installation Steps 
Easy Install & Low Maintenance Design
Perfect for Home Greenhouses, Cold Frames & Sheds 
Boost Seed Germination & Prevent Seedling Overheating
No Batteries or Electricity Needed 
Does this window opener require batteries or an electrical outlet?
No batteries needed! This automatic greenhouse window opener is solar heat sensitive. The cylinder expands with heat to open windows, offering non-electric greenhouse ventilation and an eco-friendly automatic vent kit.
What is the maximum weight capacity and what windows does it fit?
This heavy duty model lifts a 33lbs lifting weight. As a versatile window opener for greenhouse, it fits most greenhouse roof vent kits and cold frames, easily handling heavy polycarbonate or glass panels with its robust arm.
Will the materials rust or degrade if left out in the rain and sun?
No. Built with anodized galvanized steel, this durable greenhouse opener is corrosion-resistant against rain and UV. The design ensures it remains a stable, rust-proof greenhouse accessory even in high-humidity environments.
Is it difficult to install? Do I need to buy extra parts?
Installation is simple! This easy install window opener includes all greenhouse accessories like clamps and screws. No extra parts are required to set up your DIY automatic ventilation system and start regulating airflow quickly.
How long does it last and what is the operating temperature?
It lasts years and triggers at 60-77°F (15-25°C). This auto vent opener provides precise greenhouse climate control, acting as a temperature controlled vent that opens up to 18 inches to protect plants season after season.
Other Styles of Window Openers
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Customer Reviews
4.1 out of 5 stars 27
4.1 out of 5 stars 27
4.3 out of 5 stars 78
4.3 out of 5 stars 78
4.3 out of 5 stars 78
4.3 out of 5 stars 78
4.8 out of 5 stars 13
Price
$31.99$31.99
$34.99$34.99
$29.99$29.99
$33.99$33.99
$31.99$31.99
$33.99$33.99
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Type
Auto Vent Opener
Auto Vent Opener
Auto Vent Opener
Auto Vent Opener
Auto Vent Opener
Auto Vent Opener
Replacement Cylinder
Quantity
1/2 Pack
1/2 Pack
1/2 Pack
1/2 Pack
1/2 Pack
1/2 Pack
1 Pack
Material
Aluminum, stainless steel
Aluminum, stainless steel
Aluminum, stainless steel
Aluminum, stainless steel
Galvanized
Galvanized
Aluminum, stainless steel
Suitable for Greenhouse
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Temperature Sensitive Ventilation : Our automatic window opener responds to temperature changes, efficiently regulating your greenhouse’s internal climate. As the temperature rises, the gas-filled cylinder expands, gently pushing the window open. Once the temperature cools down, the spring mechanism closes the window smoothly
Reliable Helper : Crafted from premium-grade anodized aluminum and stainless steel, this window opener guarantees long-lasting performance. Greenhouse vent opener can withstand the demands of greenhouse environments, ensuring it remains your trusted gardening companion for years
Wide Temperature Range : Operating between 15°C to 25°C (60°F – 77°F), the opener adapts to various weather conditions. Greenhouse automatic vent opener achieves a full opening at temperatures above 35°C (95°F) and offers a maximum vent distance of 45cm (18″), promoting optimal air circulation
No Batteries Required : Our automatic window opener is completely self-sufficient and doesn’t rely on batteries or electricity for operation. No additional power source is needed, saving you money and reducing environmental impact
Easy Installation and Compatibility : Installing the auto vent opener is quick and straightforward with the provided clamps and screws. Greenhouse window opener fits most greenhouse windows and seamlessly integrates with roof vents for houses, making it a versatile choice for different setups
$31.99