Well some days I feel like I am in need of a new arm... but today the greenhouse received a brand new arm :-)
An actuator arm... that is!
Troy had to reinstall the old windows so they would open outwards, to accommodate the actuator. The lovely chippy paint will get a paint job when the weather gets warmer.
The arm worked like a charm and did it's thing when the greenhouse heated up today...Allowing cool air to flow in.
If the greenhouse gets to warm, the exhaust fan has a thermostat and will kick on too.