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.
Rion automatic roof vent opener for optimal airflow.
Polycarbonate panels for 100 uv protection.
The opener has a metal cylinder containing special material which expands when heated.
Can be fitted with the rion automatic roof vent opener item 47315 sold separately for automatic optimal airflow.
The rion automatic greenhouse vent opener automatically controls the temperature in all rion greenhouses.
Helps regulate temperature and humidity levels.
The automatic vent opener was designed to automatically control the temperature in all rion greenhouses.
Aids in cooling your sun room on warmer days.
The rion automatic louver side window opener is designed to automatically control the temperature and provide additional ventilation in all rion greenhouses.
This pushes a piston that opens the window.
The automatic vent opener was designed to automatically control the temperature and humidity levels and provide additional ventilation when needed making gardening easier.
Manual adjustment for variable airflow.
Automatically opens and closes the roof vent window when temperature changes.
Manual adjustment for variable airflow.
As the temperature cools the material shrinks and a spring closes the vent and resets the piston.
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.
I did not appreciate having to pay 20 more per opener for the rion name when rion isn t even the manufacturer.
Can be fitted with the rion automatic roof vent opener for optimal airflow.
The automatic vent opener was designed to automatically control the temperature in all rion greenhouses.
Provides and increases airflow.
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.
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.
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.
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.
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.
