RIGA Greenhouse - Automatic Roof Vent Opener* Free Shipping * 2016 Spring Sale * No Sales Tax *
The automatic vent opener is designed to work on all Riga greenhouse roof vents.
RIGA Automatic Window Opener with quick release "arm" - allows the opener to be disconnected in adverse weather conditions. Paraffin oil expands starting around 72ºF.
Exaco RIGA automatic window opener opens and closes your greenhouse vent panels for reliable climate control.
* No electrical power is required as the fluid-filled cylinders expand in warm temperatures. * Raise or lower the temperature setting with a simple twist of the cylinder and can be adjusted from approximately 65 to 80 degrees Fahrenheit.
* Made of steel with paraffin in the vent opener cylinder
* Rated to lift up to 15-pounds
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