Features: Brand new and high quality This Ventilation Support is a necessary accessory for greenhouses owner, providing control and adjustment of indoor air circulations. This support ensures stability and durability, allowing for operate with minimal intervention. Its technology allows for precise regulation of the environment, creating a favorable growing condition. Suitable for enthusiasts and managers, this support help maintain a healthy environment for plant. It is also beneficial for farmer/large scale enterprises. Whether in agricultural setups/small garden setups, this support optimizes the growing conditions by regulating air circulations, resultings in healthier plant. Improve your plantings efficiency and reduce cost with this Ventilation Support. Experience the convenience of managing your greenhouses easy and enjoy the benefits of thriving plant. Specifications: Length: about 32cm/12.6inch Package Includes: 1 set Window Opener Support note: Please allow 1 to 3cm error due to manual measurement, please make sure you not mind before your bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.