Sliding Windows and Doors

KLAS1 offers Balcony and Terrace sliding doors

Ergonomic doors for houses, leisure-time buildings, Semi-detached and Terraced houses, blocks of flats, etc.

Sliding doors are fitted from the same product family as our windows, which use the best insulating glass technology.

The door structure is a slender,large light aperture, and ease of operation is



When the handle is turned the first 90 degrees the door opens into the vent position. When the handle is fully turned by 180 degrees the door will be normally opened and transferred to the fixed window front.


Glazing standard is 3-times the industry A-or B-class standard for insulating glass. The windows can be equipped with solar control as well as a variety of multi-power designs.

For high security applications, we can provide toughened, laminated glass of the required standard of a thickness of at least 6 mm. 


Frame depth of 110 - 130 mm in Aluminium
Sliding doors width 720 - 2000 mm
sliding doors height 900-2700 mm
door max. weight 200 kg



Klas1-Yhtiöt Ltd
Puh. +358 424 552 71

Avainlippu     ce mark official