All our windows are made of quality German Prestige profiles with the following technical details.

• Profile width 76 mm or 84 mm, 6 chambers
• Coefficient of thermal transmittance of the profile Uf = 1.0 W / m²K, the whole window even up to 0.66 W / m²K
• Suitable for passive constructions
• Possible glazing from 20 to 44 mm
• Reinforcement 2.5 mm thick for the stability of the window structure
• Internal 2-heel glass strip for increased anti-burglary protection
• The 13-mm Euro-slot offers an upgrade to security windows with high burglary protection
• 20-degree slope for good water drainage
• Glass groove depth 25 mm for optimal thermal insulation. Sound insulation up to 47 dB (class 5)

All windows also have a certificate of suitability which you can download at this link – CLICK