With millions of units already installed, this system impresses with incredible, tried-and-tested stability and a wide range of designs. Technical details 70 mm construction depth Uf=1.3 W/m�²K Uw=0.99 W/m�²K with standard-triple-glazing with Ug=0.6 and Psi=0.040 W/mK Uw=0.76 W/m�²K best possible option with triple glazing with Ug=0.4 and Psi=0.030 W/mK Up to RC2 burglary protection Up to 45dB (sound protection class 4) Up to 41 mm glazing Wide range of laminations available Available with aluskin�® aluminium shells (wide array of colours) Recessed option, semi-recessed option, roundline option 5 chamber profile Concealed drainage is possible Optional: bonding inside (adhesive technology)