IV 78 system of wooden-aluminium windows is notable for German quality and wide facilities of production. System's facilities allow producing:

• Articles of various non-standard forms, arch, circular, trapezium;
• Non-fixed, tilt, casement windows;
• Sliding, folding terrace doors;
• Outward opening of external doors;
• Insulation value U = 1.0 W / (m² K);
• Window structure thickness - 90 mm.