High Accessories, Sensitive Greenhouse Gas Springs Automatic Greenhouse Gas Springs Single or Double Springs for Automatic Window Openers

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Product Description This greenhouse window opener replacement cylinder is designed for automatic temperature-responsive ventilation, helping maintain a healthier growing environment with reliable opening and closing performance. Made from galvanized aluminum sheet with a rust-resistant all-aluminum body, it suits most single or double spring-loaded greenhouse openers and works well for greenhouses, cold frames, and similar temperature-control applications. Key Features High Sensitivity: Built with temperature-reactive wax that responds automatically to heat changes for efficient window control. Automatic Operation: Expands as temperatures rise to help open the window and retracts as temperatures fall to support closing. Wide Compatibility: Fits most single and double spring-loaded greenhouse window opener systems. Rust-Resistant Build: Crafted with galvanized aluminum and an all-aluminum housing to help resist oxidation and extend service life. Lightweight Design: Approx. 33.5 cm in length and 145 g in weight for practical replacement and easy handling. Practical Use: Ideal for greenhouse ventilation, cold frames, and other temperature-regulated enclosure setups. Specifications Product Type: Replacement cylinder Quantity: 1 piece Material: Galvanized aluminum sheet Length: Approx. 33.5 cm Size Tolerance: Approx. 1 cm Weight: 145 g Packaging: OPP bag Usage Perfect for growers and gardeners who need dependable automatic greenhouse ventilation in greenhouses and cold frames, helping manage internal temperature naturally through heat-responsive window opening and closing. Returns, Refunds and Replacements Delivery Timeframe Please note that we cannot guarantee the exact date of arrival, and the delivery timeframes (excluding weekends and public holidays) are as follows: For customers in Victoria, approximately 7-10 working days; For customers in NSW, SA, ACT, and QLD, approximately 9-12 working days; For customers in WA, NT, and TAS, approximately 9-12 working days.