The JUSTA® adjustable window anchor is perfect for a permanent and secure weight distribution of windows and doors without need of any bearing pads. With the proven combination of JUSTA® and a multifunctional sealing tape it is possible to comply with the EnEV requirements in water- and air tightness. The simple mounting of windows in front of the wall into the insulation level improves the shape of isotherms. With the double cranked RATSCHFIX – assembly spanner it is easy to adjust the window. Another advantage is that the pane of fixed glazing has not to be removed before the assembly.