AM401 - Heat-Activated Window Opener
Controlling temperatures in a cold frame or greenhouse is straightforward with this automatic control.
It incorporates a gas-charged cylinder of adjustable volume. As the temperature rises, the gas expands; it will open a 15 lb window, more than adequate in cold frames and greenhouses. A simple adjustment lets you control the operating range. As temperatures fluctuate, the 12 1/2" long unit will open and close a window as necessary to prevent disasters.
Made in England.
Non-rusting anodized aluminum and powder-coated steel.
The opener uses a gas-charged cylinder of adjustable volume. As greenhouse or cold-frame temperatures rise, the gas expands and pushes the arm out, opening the window. When temperatures fall, the gas contracts and the window closes automatically – no electricity or manual intervention is needed.
The opener can lift a window weighing up to 15 lb, which is more than adequate for most cold-frame and greenhouse windows.
Yes. A simple adjustment on the unit lets you set the operating range – the temperature at which the opener begins to activate. This lets you customize the ventilation threshold for your plants' needs.
The opener is made from anodized aluminum and powder-coated steel, which are non-rusting and suited to the humid conditions of greenhouses and cold frames.
The heat-activated window opener is made in England.
| Materials | Anodized aluminum; powder-coated steel |
| Dimensions | 12 1/2" overall length |
| Country of Origin | England |
| Package Quantity | 1 item |
| Warranty | Lee Valley Satisfaction Guarantee |
| Capacity | For windows up to 15 lb |
Options:
Variations:
Heat-Activated Window Opener
Controlling temperatures in a cold frame or greenhouse is straightforward with this automatic control.
It incorporates a gas-charged cylinder of adjustable volume. As the temperature rises, the gas expands; it will open a 15 lb window, more than adequate in cold frames and greenhouses. A simple adjustment lets you control the operating range. As temperatures fluctuate, the 12 1/2" long unit will open and close a window as necessary to prevent disasters.
Made in England.
Non-rusting anodized aluminum and powder-coated steel.
