System Boréal Windows are manufactured with an exclusive PVC compund developed by P.H. Tech that offers unparalleled strength and durability Design quality far exceeds the most rigorous testing requirements in North America, including NFRC.

The window systems are engineered for consistency throughout vast temperature extremes in north America, and to provide superioir thermal and sound insulation. The result? Maximum interior comfort year round.

Inside and out, System Boréal Windows have a crisp, elegant line and large glass areas that let you emjjoy more light without sacrificing performance. In fact, P.H.Tech multi-hollow construction gives you the highest ratings for both energy efficiency and sound reduction.

The complex internal chambering also provides strong structural stability, without having to rely on foam filling. Frames and sashes are fusion-welded for mamimum strength, virtually eliminating any possibility of water and infiltration.

All P.H. Tech Design window styles can be joined to create an unlimited choice of Bay and Bow window combinations. This totally new approach to design is what makes the  P.H. Tech Window System a model of simplicity with added versatility. Accessories and trimmings make installation easier in all types of walls.