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Solar powered vent opener automatically opens most vents
Are you wondering who is going to take care of your greenhouse when you can't be there? Even in the winter, your greenhouse gets hot on a sunny day.
Regulate the temperature with a solar powered vent opener. The parafin wax in the piston expands to open your vent automatically as the temperature changes without electricity or batteries. Extends 12" to open and close greenhouse vents. Fits most greenhouse vents, including the Early Bloomer, Hobbyist and Enthusiast greenhouses.
Installs easily and supports up to 15 lbs.
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