
Greenhouse Automatic Vent Opener Temperature Controlled High Strength Alloy Factory Direct. Temperature Controlled Operation: Fully automatic window opening based on real-time temperature sensing. Power-Free Automatic Function: Operates without batteries or electricity using double spring mechanism. Anti-Deformation Design: Alloy-reinforced structure ensures durability and prevents deformation. 5-Year Warranty Coverage: Comprehensive warranty protection for all mechanical components. Customization Available: Supports full customization, minor adjustments, and design-based options. Multi-Color Options: Available in silver, black, blue, yellow, and red finishes. Fast Lead Time: Standard delivery within 15 workdays for both peak and off-peak seasons. Durable Material Construction: Made of galvanized steel with high-strength alloy components.