The window has a large effective glazing area, which allows more light to enter the room. All windows are double glazed, and use a single chambered construction and acoustic properties, while the U coefficient of the pane is 1.1 [W/m²K]. Space between panes is filled with inert gas. The internal pane is coated with a heat reflecting low-emission layer, externall glass toughend. It helps to reduce heat loss during winter and overheating during summer.

The air inlet of OptiLight wood type* efficiency is up to 20 [m³/h]. It is the air quantity, which flows into the room through the window with 78cm or 114 cm width and pressure difference of 10 Pa. Windows with 78cm width and bigger have in the air-inlet slat 2 openings. In windows with 55 and 66 cm width, air-inlet efficiency will be respectively lower and is 15 [m³/h]. The windows with 55 and 66 cm width are equipped with air-inlet slat with one opening.

*VB, VK.
 

OptiLight windows have a centre-pivoting construction. The hinges installed in the middle of the window allow the sash to be opened in a range of positions and to be rotated up to 180 degrees.

The handle design enables tight closing and two positions of micro ventilation. The handle positioned at the bottom of the sash makes using the window easier and more comfortable, irrespective of the height at which the window is installed.

Pivot structure and functional handle placed in the bottom part of the sash ensures comfortable use and operation.

OptiLight windows has been equipped with taughened external glass.

Metal clading

Metal cladding elements of OptiLight windows are made of suitably thick aluminium sheet which adds to their resistance to mechanical damage during transport, installation and window usage. The sheet is coated with polyester which is fully weather-resistant.

Accessories for roof windows

A wide and comprehensive range of accessories raises window usage comfort providing the possibility of light control, heat reduction and energy savings.