Alton | Thermofor Roof Vent Opener Piston Replacement Aluminum Greenhouse The innovative design and insulating

The innovative design and insulating nature of the material keeps the HOTBIN HOT

It is no longer necessary to tediously separate the composted material and fresh compost due to the chamber system

it is recommended to remove or store the cylinder indoors to help protect long-term performance

Premier Oil Vacuum Pump: 35 lbs

Its T-shaped floor plan and dramatic 38º roof slope allow for maximum sunlight exposure

Alton | Thermofor Roof Vent Opener Piston Replacement Aluminum Greenhouse The innovative design and insulatingThe 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