Hoklartherm | Riga Automatic Roof Vent Opener RUSTIC TABLE your growing needs and wants

your growing needs and wants are met under one roof

and excellent insulation

and easy to use

Lower inside temperatures help protect your special plants and create a cooler environment for your entertaining

35 lbs (Extra Large size)

Hoklartherm | Riga Automatic Roof Vent Opener RUSTIC TABLE your growing needs and wantsRIGA Automatic Window Opener (no electricity needed) with quick release arm allows the opener to be disconnected in adverse weather conditions. The black piston cylinder is filled with a mix of oils that naturally expand around 73 degrees. As the oil expands, it will begin to push out the rod of the piston and open your window. The springs and the weight of the window will pull the window shut when the temperature drops.