Easy Flow Louver Solar Opener

Open the Easy-Flow Louver automatically with a solar louver opener Let our heat-activated Louver opener do the work while you're away. •Environmentally friendly, it automatically opens and closes the Easy-Flow Louver as the air in your greenhouse warms or cools. •Add this unit to your Easy-Flow Louver included with your Solexx Greenhouse. •No batteries or electricity required. •Louver not included.