SOLAR AUTOMATIC GARDEN GREENHOUSE WINDOW VENT OPENER
Solar powered Mechanism, Automatically open and close the greenhouse vent at temperature you wish. Automatic Greenhouse Vent Opener is designed to open and close the greenhouse vent automatically, it adjust ventilation of greenhouse according to the temperature increase or reduce, achieve proper air flow in your greenhouse, no more worrying about your flowers and plants any more, even when you are not there. When the greenhouse heats up to temperatures of 15-23 Degrees, the wax expands and pushes up a stainless steel piston that opens the vent slowly. The hotter the room temperature, the wider the vents will open. Same in reverse, as the temperatures drop, the wax contracts and closes the vent accordingly. The Vent opener is driven by its solar powered cylinder, with no electricity, complete environment friendly.
Easy to install Adjustable to temperatures 15-23 Degrees (59F -73F) Automatic operation without any attention required Fits most brands Greenhouses Fully close temperature: 15 degrees (59F) or below Fully open temperature: 35 Degrees(91F) or above Fully Opened Distance: 45cm (18") Maximum open weight: 7kg (15lb) 12 Months Warranty Come with English Installation manual . (Please read this installation manual before use ) Note: This item is not available for pickup. It will be dispatched from our supplier warehouse directly .- All items will be shipped out within 1-2 business days after your payment is received.