P5 – A triple glazed unit with the anti-burglary topSafe system. Glass construction from outside to inside is 4HS-Tg10Kr-4HT-Tg8Kr-33.2T. The outer pane is a 4mm toughened glass with an easy maintenance layer and 10mm warm TGI spacer filled with inert krypton gas. The 4mm centre pane is toughened with a low emission coating and an 8mm warm TGI spacer filled with inert krypton gas. The 6.2mm internal pane is anti-burglary class of laminate 33.2 (class P2A, EN 356 1(B)1 wg EN 12600). This glazing unit produces a U-Value of 1.1W/m²K.