PRO type structural profiles are pre-wall framing system component (pre-wall mounting frame ensures the secure connection of the window to the wall). These profiles are made of a single layer of Warmotech polyurethane panel (40-80 mm thickness, depending on the window profile width), which ensures durability, dimensional stability, high compressive strength, water resistance and good airborne sound reduction characteristics. A layer of extruded polystyrene foam (20 mm XPS for PRO system, and 30 mm for PRO+ system) on the outside provides additional thermal insulation and is also an excellent surface for sufficient adhesion of sealing products.