ALT W72 is one of the most thermally efficient 72mm window and door systems on the market. The thermally improved three-chamber system for windows and doors that boasts the optimum combination of safety and comfort. Fibreglass reinforced polyamide strips with ribs and/or hollow chambers guarantee high thermal insulation levels.
This system offers fabricators the ability to make large windows & doors utilizing its sleek and slim design whilst offering market leading thermal performance.
Within the W72 system is W72 HD doors which can cater of large opening sizes of 3 meters’ high and beyond.
Basic depth of system 72mm
0.9 System U-Value possible with triple glazing
Flush appearance from the outside
• Crimp or Pin corner connection as well as adjustable corner cleats for gable frames
Glazing up to 52mm
Windows up to 2700 mm high & doors up to 3000mm high
Possibility to combine the system both of European or PVC groove hardware
PAS 24 Accredited & Certified by the German institute IFT Rosenheim

Product information

Essential Characteristics Performance
Double Glazing
Triple Glazing
Ug =1,64 W/(m²K) Ug =0,79 W/(m²K)
Thermal transmittance, Uf 1,7 W/(m²K) 1,3 W/(m²K)
Water tightness Class 4A
Resistance to wind load Class C2
Air permeability Class 3 (positive)
Class 2 (negative)