SOFTLINE 76 MD profiles are among the most modern profiles, They have high energy efficiency. The heat transfer coefficient of 1.2 W/m²K. which, with the use of a glazing package with Ug=0.5 and a warm frame, allows them to be installed in modern houses built with high thermal standards. The Softline 76 profile is a class A profile-the outer walls are 3 mm thick (+- 0.2 mm), which makes them included in this class of profiles according to the PN-EN 12608 standard. This profile has 7 chambers in the frame 6 chambers in the sash, both in the frame and the sash there is a reinforcing chamber and steel profiles that stiffen the structure. The profile is suitable for double- and triple-glazed packages. Double-glazing sets can range from 18 to 48 mm. The glazing package is embedded in the profile at a great depth, i.e. 25 mm, so the window has better thermal properties and is less prone to condensation. The Softline 76 MD system has an external gasket system and an additional center gasket, which increases protection against noise and cold penetration.