Ventomax Automatic Roof Window Opener

Avoid diseases and pests in your plants by airing them out. Many plants do not tolerate high temperatures and high humidity. Ventomax is an automatic window opener in black galvanized steel. Best suited for glass. 

Work on most greenhouse roof windows in our store, recommend to Janssens Glass.

FEATURE

• Adjustable opening temperature of 60° F to 86° F
• Single springs
• Maximum opening of 17.71", Open force 15.43 Lbs
• Recommended for vents up to 30 lbs.
• Made in Denmark by Electro Galvanized Steel

Manual

Warranty: 2 Years

How does a Greenhouse Autovent work?
A strong metal tube contains a mineral wax that expands with heat. This pushes a piston which opens the auto vent via a balanced linkage. As the temperature drops, the wax shrinks and a strong spring closes the vent and resets the piston.

Your opener can be mounted all year round, however, your cylinder must be unscrewed by

1) Use of a heat source in your greenhouse

2) Winter storm, winter must be secured with the safety belt