The vent arm was designed with the use of natural wax that expands as the air gets warmer to push a piston which raises the window then contracts as it cools closing with the use of a spring.
Rion automatic roof vent opener for optimal airflow.
Aids in cooling your sun room on warmer days.
Can be fitted with the rion automatic roof vent opener for optimal airflow.
As the air inside the greenhouse warms the vent gradually opens to allow the correct amount of air flow into the greenhouse and closes when the temperature cools.
Manual adjustment for variable airflow.
The rion automatic louver side window opener is designed to automatically control the temperature and provide additional ventilation in all rion greenhouses.
Provides and increases airflow.
As the air inside the greenhouse warms the vent gradually opens to allow the correct amount of air flow into the greenhouse and closes when the optimal temperature is reached.
This roof vent will also enable you to improve the sun rooms air circulation.
Second these openers are not made by rion but by palhram and are in fact palhram 701338 openers which can be purchased for far less money in many places including this very web site.
The automatic vent opener was designed to automatically control the temperature in all rion greenhouses.
Polycarbonate panels for 100 uv protection.
This rion roof vent kit provides additional air ventilation increases circulation and helps regulate temperatures.
As the air inside the greenhouse warms the vent gradually opens to allow the correct amount of air flow into the greenhouse and closes when the optimal temperature is reached.
As the air in the greenhouse warms the vent gradually opens to allow the right amount of air flow into the greenhouse and shuts when the optimal temperature is attained.
Manual adjustment for variable airflow.
The automatic vent opener was designed to automatically control the temperature and humidity levels and provide additional ventilation when needed making gardening easier.
Can be fitted with the rion automatic roof vent opener item 47315 sold separately for automatic optimal airflow.
As the temperature cools the material shrinks and a spring closes the vent and resets the piston.
The rion automatic greenhouse vent opener automatically controls the temperature in all rion greenhouses.
The automatic vent opener was designed to automatically control the temperature in all rion greenhouses.
As the air inside the greenhouse warms the vent gradually opens to allow the correct amount of airflow into the greenhouse and closes when the optimal temperature is reached.
This pushes a piston that opens the window.
As the air inside the greenhouse warms the vent gradually opens to allow the correct amount of air flow into the greenhouse and closes when the optimal temperature is reached.
The rion automatic roof vent opener is designed to automatically control the temperature in all rion greenhouses.
Helps regulate temperature and humidity levels.
