Bertrand Vision is a high class product that stands-out from the crowd with its sophisticated design, available from today, the window with a revolutionary new design. Bertrand Vision is a new solution for the client who enjoys individuality. The creative combination of frame and sash result in a window having benefited a complete facelift. With such a wide choice of PVC profiles available from Bertrand the only limitation is your imagination. The thermal co-efficient through Bertrand’s vision system frame is Uf=1,288 W/(m2K). When combined with good quality insulated glazed units this guarantees an excellent U value for the whole window.