Best Window Vent Opener

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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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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Automatic Roof Vent Opener Dual Spring Greenhouse Accessories Solar Heat Sensitive Automatic Greenhouse Window Opener Replacement Greenhouse Vent Opener Greenhouse Opener for Ventilation (2 Pcs)

Package Includes: you will receive 2 pieces of automatic greenhouse vent openers, enough quantity to meet your needs and replacements, and each opener comes with accessories for easy installation.
Reliable Material: these automatic greenhouse window openers are mainly made of aluminium alloy material, reliable and reusable, sturdy and strong, not easy to break or rust, which can serve you for a long time and you can also use them with confidence.
Double Spring Design: our solar heat sensitive roof vent opener adopts double spring design, which has stronger thrust force and more solid.
In addition to ordinary areas, it can also be applied in windy mountainous areas, bringing much convenience to you.
Solar Heat Sensitive: the auto greenhouse vent opener will remain open, when the temperature exceeds 25 degrees Celsius, and the opener will close completely, when temperature drops to 15 to 18 degrees Celsius, using solar energy, no batteries or electrical power needed.
Widely Applicable: these greenhouse accessories are practical and useful tools, which can be widely applied for g....

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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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DITKOK Window Dryer Vent, Galvanized Steel + Painted, for 4" Dryer Vent Hose, Fit 16" - 25" Vertical Sliding Window Adjustable, with Flexible Aluminum Ducting

The 4 inch adjustable air intake window vent by DITKOK was designed to provide the perfect solution for those that need to vent out of a window..
The window dryer vent is made with 24 gauge galvanized steel and has an aluminum back draft damper to prevent drafting from outdoors,and also prevent birds from nesting in the vent..
Simply place the vent in the open window, slide the side panels to fit the window opening (16" - 25" windows), and close the window. We designed this vent with an enlarged shroud to minimize airflow resistance. Don't worry the standard low profile dryer vent cover adds considerable resistance to airflow..
This window vent isn't just for the dryers, it can be used in paint booths, laser engravers, exhaust fan blowers, and just about any other device with a 4" circular exhaust..
During the cutting process, the zinc on the surface will be damaged, shortening the service life. After painting, the damaged surface of the window dryer vent can be repaired well, rust-proof is better, more durable, and more beautiful..

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DITKOK Window Dryer Vent, Galvanized Steel + Powder Coated, for 4" Dryer Vent Hose, Fit 26" - 36" Vertical Sliding Window Adjustable, with Flexible Aluminum Ducting

The 4 inch adjustable air intake window vent by DITKOK was designed to provide the perfect solution for those that need to vent out of a window..
The window dryer vent is made with 24 gauge galvanized steel and has an aluminum back draft damper to prevent drafting from outdoors,and also prevent birds from nesting in the vent..
Simply place the vent in the open window, slide the side panels to fit the window opening (26" - 36" windows), and close the window. We designed this vent with an enlarged shroud to minimize airflow resistance. Don't worry the standard low profile dryer vent cover adds considerable resistance to airflow..
This window vent isn't just for the dryers, it can be used in paint booths, laser engravers, exhaust fan blowers, and just about any other device with a 4" circular exhaust..
During the cutting process, the zinc on the surface will be damaged, shortening the service life. After painting, the damaged surface of the window dryer vent can be repaired well, rust-proof is better, more durable, and more beautiful..

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DITKOK Galvanized Steel Window Dryer Vent for 4" Dryer Vent Hose, Fit 26" - 36" Vertical Sliding Window Adjustable

The 4 inch adjustable air intake window vent by DITKOK was designed to provide the perfect solution for those that need to vent out of a window..
The window dryer vent is made with 24 gauge galvanized steel and has an aluminum back draft damper to prevent drafting from outdoors,and also prevent birds from nesting in the vent..
Simply place the vent in the open window, slide the side panels to fit the window opening (26" - 36" windows), and close the window. We designed this vent with an enlarged shroud to minimize airflow resistance. Don't worry the standard low profile dryer vent cover adds considerable resistance to airflow..
This window vent isn't just for the dryers, it can be used in paint booths, laser engravers, exhaust fan blowers, and just about any other device with a 4" circular exhaust..
We provide one year warranty. Note: The scratches on the surface are caused by the laser cutting machine during the cutting process, which is unavoidable, please understand..

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Forestchill Dryer Vent Window Kit for 4" Diameter Dryer Vent Hose, Adjustable Window Vent Kit with Insulated Foam Seal Strip, for Sliding Windows and Hung Windows

【4in Window Vent Kit】This window vent kit is specially designed for dryers or other round vents of 4 inches diameter, aiming to provide a window venting solution.
【Adjustable Size】A total of three window seal plates that can be adjusted freely to fit the window from 16.5" to 47", max length 47 in. Compatible with 4" diameter dryer vent hoses.
【Durable Material】Dry vent window kit is made of high quality PVC material, light weight and durable, suitable for slide window and hung window (NOT suitable for casement window).
【Quick Installation】Simply screw the dryer vent hose to hole in seal plate, adjust seal plate for desired length to fit your window, then install it to the window, perfect done! Instruction sheet included in the package.
【Foam Seal Strip】The dryer vent window kit comes with 1 roll of foam seal strip for better sealing and insulation. Perfectly blend in your room after installation, no sealing material redundancy on your window.

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TOPOWN Galvanized Steel Window Dryer Vent for 4" Dryer Vent Hose, Fit 16" - 25" Horizontal/Vertical Sliding Window Adjustable

The 4 inch adjustable air intake window vent by TOPOWN was designed to provide the perfect solution for those that need to vent out of a window..
The window dryer vent is made with 24 gauge galvanized steel and has an aluminum back draft damper to prevent drafting from outdoors,and also prevent birds from nesting in the vent..
Simply place the vent in the open window, slide the side panels to fit the window opening (16" - 25" windows), and close the window. We designed this vent with an enlarged shroud to minimize airflow resistance. Don't worry the standard low profile dryer vent cover adds considerable resistance to airflow..
This window vent isn't just for the dryers, it can be used in paint booths, laser engravers, exhaust fan blowers, and just about any other device with a 4" circular exhaust..
We provide one year warranty. Note: The scratches on the surface are caused by the laser cutting machine during the cutting process, which is unavoidable, please understand..

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TOPINCN Greenhouse Winder Opener Cylinder, Greenhouse Roof Vent Opener Automatic Vent Opener, Replacement Cylinder Temperature Sensor Perfect for Greenhouse Window

【High Sensitive】This automatic vent opener for greenhouse features high sensitive, automatic respond to weather changes, so you don't need to stay near the greenhouse..
【High Performance】This greenhouse winder opener will change as the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating..
【Premium Material】This greenhouse winder opener cylinder was made of quality material, durable, solid and convenient to use..
【Features】This greenhouse vent automatic opener is time and labor saving, also can supply a better temperature condition of plant's growth..
【Opeeration Way】This cylinder is non-electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops.This products need to be refrigerated before use it..

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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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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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