Replacement Cylinder for Solar-Powered Automatic Greenhouse Vent Opener, Thermal Control Without Electricity, 33.5 cm

HIGH QUALITY: The core technology is a hydraulic cylinder containing a premium replacement cylinder made with plant-based wax for automatic greenhouse window openers, or Aotovent, as they are commonly called.

UNIVERSAL: The replacement cylinder is compatible with most greenhouse window openers with single or double springs.

SOLAR POWERED: This specially designed cylinder, containing this wax, functions as a window opening thermostat in greenhouses; therefore, no electrical power is required.

Uses solar energy to heat the cylinder. Open or close the greenhouse vents as the temperature rises or falls, helping to maintain optimal growing conditions in your greenhouse. REPLACEMENT CYLINDER ONLY: One replacement cylinder for greenhouse vent opener. The complete automatic vent opener assembly is not included. EASY INSTALLATION: Simple DIY installation with no obstacles! Number of pieces supplied: 1 Size: Approximately 33.5 cm long