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.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within 1-2 days of it being returned to us
We offer free shipping on all of our products to most mainland postcodes. Postcodes in the Highlands such as, AB37-38 AB41-56,IV Mainland,KW1-14,PA21-40,PH15-26,PH30-41,PH49-50,KW1-14 incur a surcharge please phone for a quote. Please contact us first for a quote to ship to all offshore Island such as, Northern Ireland,Republic of Ireland, Channel Islands, Isle of Man,KA,KW,HS,IV,PA,PH,ZE,TR, IOW
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