P2 is our most popular glazing option as it offers good insulation for habitable rooms whilst also having an anti-burglary class of laminate and a U-value of 1.3W/m²K. Glass construction from outside to inside = 4H-Tg15Ar-33.2T:
• 4mm toughened glass outer pane
• 15mm warm TGI spacer filled with inert Argon gas
• 6.8mm internal pane is an anti-burglary class of laminate 33.2 (class P2A, EN 356,1(B)1 wg EN 12600), complete with a low emission coating.