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ALT W72 High performance window and door system with thermal break

The ALT W72 system is used to manufacture windows, doors and entrances designed for modern energy efficient and passive buildings. Due to newest technologies and materials, modern engineering methods the ALT W72 system meets the highest requirements.

ALT W72 features

ALT W72 windows characteristics (EN 14351-1:2006 + А1:2010):

Water tightness: class 4A;

Resistance to wind load: double glazing, Ug =1,64 W/(m²K) - class C2; triple glazing, Ug =0,79 W/(m²K) - class C2;

Acoustic performance: double glazing, Ug =1,64 W/(m²K) - 25 (-1; -3) dB; triple glazing, Ug =0,79 W/(m²K) - 27 (0; -2) dB;

Thermal transmittance, Ud: double glazing, Ug =1,64 W/(m²K) - 1,7 W/(m²K); triple glazing, Ug =0,79 W/(m²K) - 1,3 W/(m²K);

Air permeability: Class 3 (positive), Class 2 (negative).


Interior opening windows (casement, tilt & turn, hopper).

Integrated into a curtain wall windows.

Single doors.

Double doors.

Integrated into a curtain wall doors.

Exterior opening doors.

Interior opening doors.

Doors with high basement profile.

Doors with automatic threshold.

Various framing combinations.


Max. dimensions of doors and windows made of ALTW72 system are higher than of those made of wood and plasti

In addition, high strength and easy maintenance increase significantly the operating period of doors and windows made of aluminium profiles.

High thermal parameters of the profiles are comparable with best wooden frames.

High level of sound insulation.

Wide range of profiles and technical solutions.

Simple and faults excluding assembly technologies.

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