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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

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$26.99

$ 13 .99 $13.99

In Stock

About this item

  • 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】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℃; Fully open temperature: 30℃/86℉; Maximum opening distance: 45cm / 18''; Maximum load: 7-15kgs/15-33lbs.



Product Description

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INSTALLATION GUIDANCE

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Step 1

1. Place the black cylinder in the refrigerator to cool (when the refrigerator temperature is 0 ℃ ~ 8 ℃, cooling for about 10 minutes, when the refrigerator temperature is below 0 ℃, cooling for about 5 minutes).

2. Compress the black cylinder inward, which makes it easier to mount it on the window opener bracket.

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Step 2

3. Adjust the A hole and B hole in a straight line.

4. Let the black cylinder pass through both A and B holes.

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Step 3

5. Let the short buckle inserted into the C hole or D hole (when the open window distance is greater than 42cmin/16.53in, choose C hole, when the open window distance is less than 42cmin/16.53in, choose D hole).

6. When the short buckle is inserted into the C hole (or D hole), let the short buckle pass through the small hole of the black cylinder metal bar at the same time, press down hard and fasten firmly.

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Step 4

7. Pull both sides of the window opener bracket outward with force (preferably with the assistance of 2 people), so that the G thread and H hole are close together.

8. Turn the G thread and let the G thread fix on the H hole (note that you should not use excessive force to avoid breaking the metal bar of the black cylinder, if it is difficult to operate, please put the black cylinder in the refrigerator again to cool).

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Step 5

9. Put the long buckle through the E and F holes at the same time, and press hard to make the long buckle firmly fastened.

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Step 6

10. Fix I and J on both sides of the window.

11. Note: If the window is made of wood, it can be fixed directly on top of the window; if the window is made of metal, please add rectangular pieces of metal at the fixing place.

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USAGE INSTRUCTIONS

  • Minimum opening temperature: 15-25℃
  • Fully open temperature: 30℃/ 86℉
  • Max. opening distance: 45cm / 18''
  • Max. load: 7-15kgs / 15-33lbs

If the window opener installed on the window does not work

  • The installation method may be wrong, please follow the video and instruction manual to reinstall.
  • The black cylinder is stuck, you can use a drop of oil on the inside of the thread of the black cylinder, and then manually stretch the black cylinder several times.
  • If the above methods are not applicable, please put the black cylinder into 35-45℃ water for 30 minutes, after 30 minutes if the black cylinder has extension, it means the black cylinder can operate normally (maybe you installed it wrong, install it again according to the video and instruction manual), if there is no extension, it means the black cylinder is damaged, we will replace the black cylinder for you.

Doug H.
Reviewed in the United States on March 9, 2025
Amazing device really. So convenient that it works without any battery, electrical plug, or solar collector. The contents of the cylinder expand when warn and push the window open gradually. Of course the process reverses when it cools. You have some control over how sensitive it is, i.e. at what temperature it starts to open. It's pretty easy to install. Because of the configuration of my particular greenhouse window frame I needed to drill two small holes but that was easy.
bart s.
Reviewed in the United States on January 10, 2025
Flat out did not work. I have, and am, using others, so I am familiar with the device.
Dasha Barmina
Reviewed in the United States on July 13, 2024
Does what it needs to do, opens on time and closes. Perfect.
Mike from NJ
Reviewed in the United States on August 20, 2023
The adjustments on this opener will not close it all the way and this is a double spring opener. I have one that came with a another greenhouse and that closes all the way at 65°. They need to use a different piston. It wants to open more than needed. If not for the pin stop installed it would break the vent door. This is built sturdy.
jimmy
Reviewed in the United States on May 21, 2023
The instructions were clear and it installed and works as advertised. We've just started the greenhouse season so we'll see how they last. They have a one year warranty.
manuela maier
Reviewed in Germany on March 29, 2023
leichte Montage - lediglich die mitgelieferten Schrauben sind meiner Meinung nach leider zu kurz - musste eigene längere dafür nehmen.Vor allem bin ich begeistert, dass es funktioniert.. habe ein Frühbeet von Juwel.. es geht in der Früh super toll auf - und am Abend wenn es kühler wird geht es zu. Traumhaft! Ich habe 2 davon gekauft.. echt super.
DAC
Reviewed in the United States on March 24, 2023
This exact same opener is sold by several sellers under different names. This particular one is identical to a previous purchase costing $6 more.I used them for homemade cold frames and they work perfectly. It keeps air temperature around 70 degrees F. It baffles me why the cylinder is panted black because it can open due to sun shining on it long before air temperature within cold frame reaches 70. However on average with nighttime temperatures in the 20-30 F range and daytime 45-55 range it seems to stabilize around 70 in partial sun.
scott tucker
Reviewed in the United States on December 24, 2023
They work great
Lothar Huemer
Reviewed in Germany on April 7, 2023
alles ok
Kunde
Reviewed in Germany on September 8, 2022
Alles OK gerne wieder
Oldboy
Reviewed in the United Kingdom on August 23, 2022
Nothing to dislike
Customer
Reviewed in the United States on August 20, 2022
does what it is supposed to do, nice sturdy build, very pleased.
Marco
Reviewed in Germany on October 10, 2022
Die Montage war erst nicht ganz eindeutig aber hat dann doch gut funktioniert.Bis jetzt stabil und funktioniert.Also Daumen hoch.
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