In our greenhouses we have a large window at one end and a door at the other end. We have always manually opened them when the weather gets warmer or the sun shines and heats up the greenhouses before the end of winter. We have intended to install automatic vent openers for quite awhile, but kept putting it off.
Today two Bayliss Mk 7 Autovents were installed in each of two greenhouses. I decided to build a new window vent above the door near the peak of the roof.
The first step was to build a inner and outer frame out of 2 x 2's. I cut the pieces then drilled holes to screw them together and screw the frame to the greenhouse beams.
Both frame pieces were glued and fastened together with screws.
The frames had a twist in them so I used 25 pound weights to straighten them while the glue dried.
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Weights Used to Straighten
After they dried, I installed two hinges.
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Inner and Outer Frames
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| Hinges Installed |
The next step was to fit the vent in the spot where I wanted to install it, and cut a hole in the greenhouse panel.
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| Fitting the Vent Frame |
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| Polycarbonate Panel installed |
Then the frame was screwed into the 2 x 4 studs in the greenhouse. A scrap Polycarbonate greenhouse panel and foam strips were installed. Then the vent opener was installed.
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| Finished and Adjusted |
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