- Smooth design and harmony of rounded shapes;
- Rounded sash and frame contours;
- Increased static and safety due to a steel reinforcement;
- Increased stability and burglary resistance thanks to the steel reinforcement system in the frame and sash;
- Optional atypical shapes, i.e. arches and trapezoids;
- Optional muntin bars.

 
                         
                                     
                                     
                                     
		 
		 
		 
		 
		 
		 
		 
		 
		 
		 
		 
		 
		 
		 
		 
		