Free Shipping See Details Free Shipping when purchased with a Snap & Grow Greenhouse - Anywhere in the Continental United States! Shipments to Alaska or Hawaii qualify for free shipping to any West Coast port. Please contact a Sales Representative for special shipping rates from the West Coast to
Free Shipping when purchased with a Snap & Grow Greenhouse- Anywhere in the Continental United States!
Shipments to Alaska or Hawaii qualify for free shipping to any West Coast port. Please contact a Sales Representative for special shipping rates from the West Coast to Alaska or Hawaii.
The Automatic Vent Opener was designed to automatically control the temperature and humidity levels 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 temperature cools. 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 is compatible with all Palram greenhouse models only. The solar powered Vent Opener will start to open as temperatures inside your greenhouse reach 68 degrees F with full-open at 80 degrees. It installs quickly and easily and will provide care-free ventilation.
This item ships free - Anywhere in the Continental United States!
Shipments to Alaska or Hawaii qualify for free shipping to any West Coast port. Please contact us for special shipping rates from the West Coast to Alaska or Hawaii.
LTL Freight Type
Available for Drop Shipment
Three of these openers have failed completely within a week to a month after installation. I originally bought two. When one failed I learned that Greenhouse Megastore doesn't have a replacement policy so I had to buy a new one, which worked great for exactly four days before it started leaking oil. In the meantime, the remaining opener also failed. They will refund your money so I'm sending all three back and looking elsewhere for an opener.
Automatic vent opener
This product functions well when it is new. The previous one did not winter over and had to be replaced. This fall I will take it out and leave it in the house. The new method of attachment is a significant improvement.
I was under the impression that this auto opener would open and close the vent. Vent never changes position. It is always open and I cannot get it to close.
Automatic Vent opener review
Works fantastic. A bit tricky to assemble into the greenhouse.
auto widow opener
product works well
Highly recomended important add on
Easy to install and except for a few of the chilly days has been opening and every day and closing every night. It is just short of amazing!
Works like a charm
I think this would be a must have for any greenhouse.
really neat device, don't know how it works, but it works. would reccomend it to anyone
Totally cool! I just love to see it open and close the vent with no electricity. I just hope that the magic doesn't wear out.
Agree with another reviewer...don't know how it works but it works. Installation directions could have been better. Installed and just waited to see if it worked and it did.
I'm very impressed at how it actually works!! Very easy to install. Great value!!
Automatic Vent Opener
I don't understand how it works but it does. Love it.
Easy to install
Did exactly what it was supposed to. Helps keep the temperture down opens and closes automatically anmd was easy to install