Move and refresh the stagnant atmosphere in your greenhouse or building to make a healthier and more productive growing environment. These greenhouse exhaust enthusiasts are excellent for reducing plant and worker heat tension. Our exhaust supporters provide superb ventilation for high tunnels and chilly frames. Create a cooler more comfortable growing environment, that may directly contribute to productivity, quality and profitability for your greenhouse business. Exhaust supporters also works great in workshops and buildings.
Move and refresh the stagnant air in your greenhouse to create a healthier and more productive environment. These exhaust & circulating fans are great for plant growth. Create 
a cooler convenient growing environment, which can directly contribute to productivity, quality and profitability for your greenhouse business.
The concept of cooling a greenhouse with thermal buoyancy and wind dates back to the start of controlled environment. All greenhouses built just before the 1950’s had some kind of vents or louvers that were opened to allow the excess heat to flee and cooler outside surroundings to enter.
When polyethylene was developed with large sheets within the whole roof, putting vents on the top proved difficult. Engineers then came up with the concept of using supporters that attract outside atmosphere through louvers in a single endwall and exhaust it out the opposite end. With thermostatic control, this is, and still may be the accepted method for cooling many structures where positive surroundings movement is needed.
Growers with hoophouses have found that roll-up sides work very well for warm time of year ventilation. Both manual and motorized systems can be found. A spot with good summer season breezes and lots of space between houses is needed. It helps to have greenhouses made with a vertical sidewall up to the elevation of the attachment rail to lessen the amount of rain that may drip in.
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