Model # 701338

Internet #202075434

Palram 2-3/4 in. x 15-3/4 in. Automatic Vent Opener
0763552700438

Palram

2-3/4 in. x 15-3/4 in. Automatic Vent Opener

$54.58 /each

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Product Overview

The Automatic Vent Opener was designed to automatically control the temperature, humidity and provide additional ventilation when needed, making gardening easier. As the air inside the greenhouse warms, the vent gradually opens to allow the correct amount of air flow into the greenhouse and closes when the optimal temperature is reached. The vent arm was designed with a metal cylinder containing wax which expands when heated to push a piston, which raises the window, as the air gets warmer, then contracts as it cools, closing with the use of a spring and resetting the piston. All you need to do is to install it on your roof vent window and it automatically starts working. The Automatic Vent Opener operates without the use of electricity and works with all our Greenhouse models only.

  • Assembled dimension: 15.75 in. W x 2.75 in. D x 2 in. H
  • Opens roof vent automatically as temperature warms for air circulation and heat relief, Closes when temperature cools
  • Solar powered, heat activated - start opening point: 54-59 F degrees
  • Mechanic system - no electricity is needed
  • Suitable for all Palram greenhouses and easy to install

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Customer Questions & Answers

1 Question2 Answers

Customer Questions & Answers

2-3/4 in. x 15-3/4 in. Automatic Vent Opener
2-3/4 in. x 15-3/4 in. Automatic Vent Opener

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2 answers

how is vent opener installed

This question is from 2-3/4 in. x 15-3/4 in. Automatic Vent Opener
Asked by
carmel n.y.
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February 8, 2016
How would I install vent. before motors opened vents. Would one vent open vent 12 ft long?
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Answers (2)

Asked by
Aurora Or.
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September 20, 2016
Answer: 
It's designed to open one vent on the greenhouse, 24". I don't think it will open 12ft of vent.
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February 10, 2016
Answer: 
Hi slips,
The Automatic Vent Opener is compatible with Palram & Rion greenhouses only.
Thanks!
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  • 2016-10-31 T00:06:32.699-05:00
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Customer Reviews

2-3/4 in. x 15-3/4 in. Automatic Vent Opener is rated 4.6 out of 5 by 20.
Rated 5 out of 5 by from Works like a charm. Easy to install. You can adjust the amount it opens but not the temperature... Works like a charm. Easy to install. You can adjust the amount it opens but not the temperature it opens at. Opens incrementally with the increase in temperature. Appears to start opening around 70 degrees F.
Date published: 2016-11-15
Rated 5 out of 5 by from The unit appears to be well constructed. Instructions indicate that the unit is to be installed ... The unit appears to be well constructed. Instructions indicate that the unit is to be installed only when you are not using an auxiliary heat source, so I will have to comment further once we get past winter.
Date published: 2016-12-27
Rated 5 out of 5 by from Works as advertised! Installed easily and works just as advertised! May buy another for my other vent.
Date published: 2016-09-20
Rated 5 out of 5 by from A handy accessory! I recently purchased the 8’x8’ Snap and Grow greenhouse and purchased this at the same time. I am so glad that I did! The temperature in my area fluctuates pretty often and I am a little too short to reach the standard arm that came with the greenhouse, so this was just what I needed.
Date published: 2010-09-28
Rated 4 out of 5 by from does the job Hard to assemble.instruction not very clear,however works well
Date published: 2016-04-26
Rated 5 out of 5 by from Works great Easy to install and works great. One thing I have just noticed is that if you put a heater in the greenhouse the vent arm will open if it gets above 65 inside. We'll see if 30 degrees outside what happens. So it is really responsive to temperatures.
Date published: 2014-11-12
Rated 3 out of 5 by from The instructions are lacking detail I made a custom bracket to mount two of these in a Greenhouse from Harbor Freight. I could not find a photo of one of these mounted with the vent closed. The two I purchase worked per the instructions, but with the units at the halfway point on the adjustment and at 60 degrees the ends that are mounted to the frame and the vent are about 8 inches apart. I was not able to mount them without making the bracket. See the photo attached. Pay attention to the initial preparation where the unit is placed in the fridge for a while. This allows the rod to free up from its initial stuck postion.
Date published: 2015-05-20
Rated 1 out of 5 by from We love the greenhouse but the vent arm does not attach The directions in the vent arm box do not match the parts that came with it. And so there is no way to attach the vent arm to the greenhouse. We even drove to another town to see the one of the friends who recommended it to us. Their vent arm parts were completely different from the ones we received. I hope this is a temporary problem.
Date published: 2012-06-08
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