Bring fresh air into your greenhouse without electricity. Rugged aluminum frame measures 12"W x 12"L. The included heat-powered opener automatically opens and closes the Louver when your away. Adjusts to open at temperatures between 65-75° F. Use the simple pull cable to open the shutter manually or set the auto opener to open at set temperature. The auto opener can also be quickly detached to store in the winter.
Choose from:
12" x 12" Louver
18" x 18" Louver
24" x 24" Louver
