Alton | Thermofor Louver Window Opener Piston Replacement estimateend-14 Product Width (IN): 33

Product Width (IN): 33

* Dimensions are approximate conversions from metric measurements and should not be relied on for assembly purposes

or discolor

Additional boxes are shipped with the rest of the parts

Alton | Thermofor Louver Window Opener Piston Replacement estimateend-14 Product Width (IN): 33The 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