About This

• Prevents Overheating: Auto roof window vent opener stops a greenhouse from getting too hot on a summer day. Automatic window opener replacement attaches to a greenhouse window on a frame. Automatic window opener kit opens the window when inside temperature rises in a garden. The window closes when temperature drops at night. The plants stay at a safe growing temperature in a backyard greenhouse
• Opens Window Automatically: Greenhouse automatic window opener opens a greenhouse window without your hand. Window opener for greenhouse closes the same window when the sun goes down. Automatic roof vent opener sets once on the window frame with two screws. The window moves as the sun heats the greenhouse during daylight hours. You check the window once per week
• Temperature Change Response: Automatic window vent opener senses temperature changes in the greenhouse air. Window vent opener replacement opens a roof vent when temperature rises above a set point. Auto vent opener closes the vent when temperature falls in the evening. The plants receive the best growing temperature for tomatoes. The greenhouse avoids overheating on a cloudless afternoon in spring
• Solar Non Electric: Window opener uses solar energy from the sun for power. Window vent kit does not connect to an electrical outlet in a shed. Greenhouse window opener opens the greenhouse vents as temperature rises on a hot morning. The unit closes the vents as temperature drops at dusk. The device works without batteries or an extension cord in a remote garden
• Clamp Or Screw Mount: Auto greenhouse window opener clamps onto a greenhouse frame bar made of metal. Greenhouse vents self opening screws onto the frame with metal screws for wood. Auto greenhouse vent opener chooses the mounting for your window type. The clamp fits on a round metal frame bar in a hoop house. The screw mounts on a flat wooden frame bar in a cedar greenhouse. The device stays attached during spring rain and fall wind