Top Automatic Greenhouse Vent Opener Reviews

1 White Recessed Screw Terminal Block Door Contacts NC Alarm Door Window Sensors with Magnetic Reed Switch. These 38 Door Contact Position switches DCS Work

[Automatic Vent Opener]-- As the temperature changes automatically, this auto thermo for window maintains the best growing temperature and prevents your greenhouse from overheating.
[Greenhouse Helper]-- With this greenhouse vent autovent it can prevent greenhouse overheating. Ideal for your greenhouse window--opens and closes your greenhouse window. Start to open - 15°c - 25°c (60°-77F).
Fully open temperature 35° (19f) or above.
[Solar Energy]-- Non electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops. This solar heat sensitive vent opener can lift up to 15 lbs. the cylinder closes well before deep freezing and opens again with no problem..
[Premium Quality]-- This solar heat sensitive adopted elongated aluminum cylinder with paint spraying, weather resistant. Aluminum frame looks more lustrous, durable and rust-proof..
[Warm Tips]-- Do not use this opener anywhere the temperature will exceed 45° (122F). To use with the greenhouse, you need to use the drilling tools to screw into the channel and fix it..

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BIBISTORE Solar Automatic Window Opener for Greenhouse Heat Sensitive Auto Greenhouse Vent Opener Greenhouse Accessories Hothouse Roof Vent Kit-Lifts 15 Lbs

...and closing. When temperature above 25°/77°F, the window opener will keep opening.Fully open temperature at 30° (86°F) or above.
once temperature drop to about 15°/59°F, the window opener will totaly close..
【NON ELECTRIC】Uses solar energy, open or close the greenhouse vents as temperature rises or drops and clamps to greenhouse bars - no drilling needed quality construction..
【APPLICATION】Maximum window opening approximately 45cm/18'', depending on adjustment and load. Window roof vent opener Suitable for greenhouse window up to 7kg (if more than 7kg, we recommend you to use two window opener)..
【AUTOMATIC】This opener will automatically open and close your greenhouse window, as the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating..
【NOTICE】 Do not apply excessive loads by locking or covering window.The automatic ventilation window opener in the greenhouse cannot be used in an environment with a temperature higher than 50°.

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Yziixi Solar Heat Sensitive Automatic Greenhouse Vent Opener Auto Vent Kit Gardening Tools for Greenhouses Roof Ventilation Single Spring Vent Opener

【HIGH QUALITY】All parts corrosion resistant. Spring controlled - Resists wind damage when opening and closing. When temperature above 25°/77°F,....
【NON ELECTRIC】Uses solar energy, open or close the greenhouse vents as temperature rises or drops and clamps to greenhouse bars - no drilling....
【APPLICATION】Maximum window opening approximately 45cm/18'', depending on adjustment and load. Window roof vent opener Suitable for greenhouse....
【AUTOMATIC】This opener will automatically open and close your greenhouse window, as the temperature changes automatically, maintains the best....
【NOTICE】 Do not apply excessive loads by locking or covering window.The automatic ventilation window opener in the greenhouse cannot be used in an....

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A ANLEOLFIE Automatic Roof Vent Opener Greenhouse Accessories Solar Window Louvre Thread Opener Up to 30lbs Dual Spring Opener

Automatic Window Opener Prevent hobby greenhouse overheating.
Auto Open/Closed.The greenhouse window opener does not consume any power, no batteries or electrical power needed.
Ideal for your greenhouse window, wall and hobby vents in higher wind situations.
Starts opening between 59 - 77°F, Replaces manual vent arm.
Screw directly into polycarbonate panels, wood, or metal frames..

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BIBISTORE Greenhouse Automatic Vent Opener Solar Roof Vent Opening Kits for Wooden&Aluminum Greenhouse Auto Hothouse Window Opener Agriculture Greenhouse Acessories Lifts 15.4 Lbs(7kg)

Automatic Window Opener Prevent hobby greenhouse overheating.
Auto Open/Closed.The greenhouse window opener does not consume any power, no batteries or electrical power needed.
Ideal for your greenhouse window, wall and hobby vents in higher wind situations.
Starts opening between 59 - 77°F, Replaces manual vent arm.
Screw directly into polycarbonate panels, wood, or metal frames..

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GLOGLOW Greenhouse Automatic Window Opener Auto Vent Replacement for Gardman Vents Temperature Controlled Sensor Automatic Window Opener

Non electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops..
High sensitive, automatic respond to weather changes, so you don't need to stay near the greenhouse. As the temperature changes automatically,....
This is a replacement cylinder for automatic window opener. Deal for your greenhouse window--opens and closes your greenhouse window..
Window opener for greenhouse can time saving, also can supply a better temperature condition of plant's growth..
Great for most greenhouse to open or close window automatically. Adjustable for different opening heights and mountable two different ways, taking up....

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Artilife Greenhouse Automatic Window Opener Automatic Vent Opener Kit Double Spring Greenhouse Window Lifts 30 Lbs

【High Quality】This automatic window opener is constructed from quality iron. The plastic-sprayed aluminum frame is more shiny, durable and....
【Environmental friendly】Using solar energy, non-electric power, the greenhouse windows can be opened or closed as the temperature rises or falls..
【Good window opening tool】This opener will automatically open and close your greenhouse windows to maintain the best desired temperature and....
【Easy to stall】Easy to install to your greenhouse vents or windows using the provided screws and clips or your own fasteners to enter the....
【Working Conditions】Do not apply excessive load by locking or covering the windows. Greenhouse automatic ventilation window openers cannot be used....

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EBTOOLS Automatic Roof Vent Opener Greenhouse Accessories Solar Window Louvre Thread Opener Up to 30lbs Dual Spring Opener

【Suitable for Most Greenhouses】 This corkscrew will automatically open and close your greenhouse windows to maintain the optimal growing....
【High-Quality Structure】 Reliable, high-quality anodized anodized aluminum automatic window opener..
【Working Conditions】 Start opening 20°C-25°C (68-77°F).
full opening distance 45 cm (18 inches), maximum opening weight: 7kg / 15lb..
【Environmental Protection】 Non Electric uses solar energy to open or close the greenhouse vents as the temperature rises or falls, including....
【Convenience】 Sensitive opener can be clamped or screwed on the greenhouse frame without drilling holes..

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ROBTLE Automatic Vent Opener Lifts Solar Heat Sensitive Automatic Greenhouse Window Opener Greenhouse Roof Vent Opener Easy Assemble Auto Vent Kit for Palram Greenhouse 15 Lbs

Designed for : With this greenhouse vent autovent it can prevent greenhouse overheating. Ideal for your greenhouse window--opens and closes your....
Weather Resistant : This solar heat sensitive adopted elongated aluminum cylinder with paint spraying, weather resistant. Aluminum frame looks more....
Prevents Your Greenhouse from Overheating : As the temperature changes automatically, this auto thermo for window maintains the best growing....
Solar Energy Powered : Non electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops. This solar heat sensitive....
Warm Tips : Do not use this opener anywhere the temperature will exceed 45° (122F). To use with the palram greenhouse, you need to use the drilling....

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KOXXUD Greenhouse Vent Window Opener, Upgrade Greenhouse Vent Automatic Opener with The Load of 15 kgs / 33 lbs to Automatically Open and Close The Greenhouse Window and Roof

KOXXUD Double Spring Greenhouse Window Opener improves the low bearing capacity of the single-spring window opener and optimizes the problem of rust-prone black iron spray paint window opener, which adapts high-quality aluminum alloy material, the thrust is larger and more durable..
【VERY ECO-FRIENDLY】Double spring greenhouse window opener does not require batteries or electricity, as the indoor temperature and air pressure rise or fall, it automatically opens or closes the greenhouse's vents, which maintains the optimal temperature for plant growth..
【EASY INSTALLATION】Easy installation and storage of double spring greenhouse window opener via the video linked of our products or installation manual..
【DOUBLE SPRING DESIGN】According to previous customer feedback, we upgraded the old single spring to double spring, and the maximum bearing force has been increased from 7kgs/15lbs to 15kgs/33lbs, so that the window opener can not only be used in lightweight aluminum alloy windows, but also used on wooden windows..
【NOTE】Minimum opening temperature: 15-25℃.

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BIBISTORE Automatic Vent Opener Auto Greenhouse Window Openers Solar Powered Cold Frame Roof Vent Kit Wooden Hothouse Vent Auto Opening Tool Gardening Supplies-Lifts 15.4 Lbs 7kg Double Spring

HIGH QUALITY MATERIALS-Made of high quality of aluminum and stainless steel.Durable and no rust..
NO ELECTRIC POWER NEEDED&AUTOMATIC-Solar powered , automatically open or close the greenhouse vents as temperature rises or drops..
DOUBLE SPRING-Double spring type, suitable for windy mountain area, resist wind twist.Stronger Force,lifts up to 15.4 Lbs(7kg)..
EASY INSTALLATION-Comes with a fitting accessory pack and a detailed manual for easy installation..
OVERHEATING PROTECTION-This automatic window opener will help you maintaining the best growing temperature and prevent your greenhouse from....

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Ycsst Automatic Vent Opener Standard Automatic Roof Vent Opener Solar Heat Sensitive Greenhouse Autovent Opener Standard-Lifts 15LBs for Hothouse Cold Frame Gardening Tools No Power Needed.

Suitable for Most Greenhouses：The maximum load-bearing capacity of the glass of the ventilation window does not exceed 15lb..
Working Condition：The maximum height of the open window is about 45 cm (18 inches)..
Automatic Opening/ClosingUses Solar energy only, no power required..
Excellent Quality：Stainless steel galvanized sheet, double spring design, automatic temperature adjustment 15-25°..
Tips：Note: Do not apply excessive loads by locking or covering window.The automatic ventilation window opener in the greenhouse cannot be used in an....

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Aoodor 81” (L) x 93”(W) x 98”(H) Outdoor Walk-in Greenhouse, Plant Gardening Polycarbonate Green House with Roof Vent and Fir Frame for Backyard Garden

【Ideal Growing Environment】- Our walk-in greenhouse is the perfect solution for a productive garden. Enclose plants and veggies in the protected environment of our greenhouse to keep them safe from harsh weather conditions, pests, and more..
【HEAVY-DUTY BASE AND FRAME】- This greenhouse measures 81” (L) x 93”(W) x 98”(H). The walk-in design features plenty of room for your plants to grow and for you to easy-care..
【Durable Frame】- The walk-in greenhouse is made of fir frame, ensuring backyard greenhouse durability and reliability throughout the seasons to come..
【Roof Vent】-The greenhouse features an adjustable roof vent you can use to let in fresh air and easily manage excess moisture. Fine-tune the angle and bring balance to your grow space..
【Polycarbonate Panels】- The polycarbonate panels allow plenty of natural sunlight in while keeping out harmful UV rays, moisture, and insects..

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