Replacement Cylinder for Automatic Vent Opener Black Replacement Greenhouse Vent Window Opener Temperature Con ZMYX Features: Ideal gift for garden enthusiasts: If you know someone who loves gardening, our automatic window opener replacement cylinder can make the wise gift. Help your loved ones preserve their plants from extreme temperature fluctuations, Kind attention: This product only includes the replacement cylinder automatic greenhouse window opener. It does not include the complete set of the automatic opener. Specifications: Main material: aluminum, stainless steel, ironColor: black, silverSize: about 12.4 inches or 31.5 cm longFully opening temperature range: 77-86 or 25-30 Minimum opening temperature range: 59-68 or 15-20 Package includes: 1 x Replacement cylinder for automatic vent opener Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Note: this product only includes the replacement cylinder automatic greenhouse window opener. It does not include the complete set of the automatic opener. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.