We had one in my house growing up. Looked exactly like this one only it had a plastic frame around the shutters. My house was built in the 60s and my grandfather installed it in the early 80s
I've had one for years. A trick I do is turn the fan on high, hold a dry kitchen sponge between the open shutters as you slow down the fan, the sponge will keep the shutters open, no matter how slow you adjust the fan. Sometimes, I like just a low breeze and no noise, pulled thru a window far away.
