Britesea
Sustainability Master
automatic window openers like these are wonderful...
https://www.amazon.com/Univent-Automatic-Solar-Vent-Opener/dp/B0083IZG0A
https://www.amazon.com/Univent-Automatic-Solar-Vent-Opener/dp/B0083IZG0A
That's fantastic - looks great! Love the pics - lambs have the cutest faces.the greenhouse is close to being done.