Fakro FTT R3 Pine Off-Centre Pivot Window with Highly Energy Efficient and Sound Reducing R3 Triple Glazing Description The FTT R3 off-centre pivot window has a hinge situated above the centre of the window height, so even a tall person can comfortably stand at the open window. A conveniently positioned handle at the bottom of the sash makes the window easy to open and close. Easy to both clean the outer window pane and operate the awning blind with the use of  a blocking sash bolt when the sash is rotated through 180 degrees. Made from high quality pine wood, glued in layers and vacuum impregnated. The R3 Glazing Unit Exceptional energy efficiency: The FTT R3 sashes have widened frames when compared to standard windows. This minimises the issue of thermal bridges and ensures better overall window insulation. Improved security: Fakro's topSafe anti-burglary security system ensures improved security. Key features include reinforced hinge and lock. Noise Reduction: R3 laminated triple glazing significantly reduces noise penetration. The panes are also filled with the inert gas, argon, which further reduces noise penetration. Window Features Window U-value: 0.81 W/mK  Glazing U-value: 0.5 W/mK Acoustic Insulation (Rw): 40 dB  Glazing Unit: 8H-16-4HT-18-33.2SIT  Number of Seals: Five Panes Filled with: Argon (inert gas)