Frame and sash
OKPOL centre pivot roof windows are made of top-quality pinewood bonded in layers and protected with an impregnating agent and double-coated with a colourless finish lacquer.
All OKPOL roof windows are double glazed with sealed units filled with Argon gas and with low emission glass on the inner skin achieving a U value of U = 1.1 W/m²K. Special gasket placed under the glass on the bottom of the sash drain off possible condensation. Spacer between glasses is made of one element to reduce thermal brides.
Automatic air inlet - SlotAir
The air inlet is installed inside the frame and does not reduce the glazing area. This allows a flow of fresh air in to the room even when the windows are closed and also enables the room to remain heated. The air inlet and filter are easily removed and replaced for cleaning.
The hinge is placed in the middle of the frame and allows the sash to be tilted to any angle for ventilation or rotated by 180 for cleaning exterior glass.