Rated 4.5 out of 5 by 17
Rated 3.0 out of 5.0 by Mike 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.
May 20, 2015
Rated 4.0 out of 5.0 by robroy does the job
Hard to assemble.instruction not very clear,however works well
April 26, 2016
Rated 5.0 out of 5.0 by Sandigee Just what I wanted!
Wanted a hobby greenhouse to keep the rodents from eating all my veggies. If you take the time to sort all the parts so you can find them before you begin, the greenhouse goes up quite easily, although it takes a good 8 hours with 2 people for this particular kit. It is very substantial when together and I just love it. Stays quite warm inside even on chilly nights. The shed is great for all my tools. Couldn't be happier.
May 7, 2014
Rated 5.0 out of 5.0 by Rockhound Simple but effective
The Palram automatic vent opener is very simple and borders on genius. I am very impressed with the engineering and design of Palram products and this is no exception. Installation is fairly simple but requires some mechanical skill.
December 29, 2015
Rated 5.0 out of 5.0 by Mike makes life easy and saves your plants
Pretty straightforward installation and it comes with parts to fit most Palram greenhouses (I think there's only one model it doesn't fit). Although opening and closing the roof vent is easy, remembering to do it is hard. Lost a lot of good plants last year just because they were cooked in a closed greenhouse. Now I don't have to worry about when to open and close the vent, and it has made things so much easier - not to mention that the plants are a lot happier now.
June 8, 2015
Rated 5.0 out of 5.0 by KaKlem What a time saver!
We purchased 2 of these hinges for our new greenhouse. Installing them was easy, and when put in place, they actually open up on their own. Amazing invention. This will save us some headaches, as we won't have to worry about our roof vents in the greenhouse not getting opened. I am happy we purchased this item, even though I thought they were a bit expensive. But if this invention saves my plants from burning up, then it was worth every penny we spent on them.
July 28, 2014
Rated 5.0 out of 5.0 by Buchanan 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.
November 11, 2014
Rated 5.0 out of 5.0 by thelittlegreenhouse Best Purchase Ever
This product is absolutely wonderful. I would highly recommend it to anyone, it works perfectly. I don't have the hassle of opening and closing the vent daily or being concerned about the temperature of the greenhouse if I am away from home.
October 29, 2014