In the GSW Office glass doors fittings from the German company Wilh. Schlechtendahl & Söhne (WSS) are used. They provide both aesthetic values and the highest strength characteristics.
Durability (DIN EN 12209): 1,500,000 cycles
Corrosion resistance (DIN EN 1670): class 3
Load capacity (DIN EN 1935): 60 kg
Durability (DIN EN 1935): 500,000 cycles