Alton | Thermofor Louver Window Opener Piston Replacement slim shed You just need to add

You just need to add plants and smile

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Available colors: Green

Compatible with Palram - Canopia 10’ x 30’ Patio Cover models: Feria

Alton | Thermofor Louver Window Opener Piston Replacement slim shed You just need to addThe Thermofor Louver Vent Replacement Cylinder is designed to restore smooth, automatic operation to your greenhouse louver vent opener. Compatible with Thermofor, Robinsons, and Alton branded louver openers, this replacement cylinder helps maintain proper airflow and temperature control without manual adjustment. Inside the cylinder is a heat sensitive wax core that expands as temperatures rise and contracts as they cool. This natural movement powers