Hoklartherm | Riga Automatic Roof Vent Opener Duramax insulated building 1 louver window with clear

1 louver window with clear Lexan cover sheet for the winter season and automatic opener (no electricity needed)

but larger in size at a very generous 250 sq ft (without the optional benches and grill)

Effective Light Control

8mm twin-wall polycarbonate roof panels - polycarbonate panels are virtually unbreakable and block 99

you can create an inviting environment that you want to use all year long

Hoklartherm | Riga Automatic Roof Vent Opener Duramax insulated building 1 louver window with clearRIGA 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.