Rion Automatic Roof Vent Opener for Rion Greenhouses antique potting bench creating a glow instead of

creating a glow instead of a light beam effect for more even light distribution for a longer period

1 – Two-stage commercial thermostat to control fan & shutters and 1- single-stage thermostat for second fan

Product Height (IN) :  1

4Class: 125Sub: 5SHIPPING FROM CITY

Growers edition includes: Mont 20 ft greenhouse

Rion Automatic Roof Vent Opener for Rion Greenhouses antique potting bench creating a glow instead ofThe 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 air flow into the greenhouse and closes when the optimal temperature is reached. 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