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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
Reserve from the case
Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
Regenerated Polypropylene
this thoughtfully engineered kit combines smart design
9% of harmful UV rays and crystal clear virtually unbreakable 0
Commercial Grade - same materials used by professional growers
Alton | Thermofor Roof Vent Opener Piston Replacement leanto shed Regenerated PolypropyleneThe Thermofor Long Piston Replacement is a direct replacement cylinder designed for Thermofor automatic roof vent openers used in Alton greenhouses. If your current opener is no longer responding properly to temperature changes, replacing the piston is a simple way to restore reliable, automatic ventilation. This heat sensitive cylinder contains a wax core that expands as temperatures rise and contracts as they cool, driving the vent to open and close
Pay in 4 interest-free payments of $12.25 Learn more