The acoustic insulation of windows is a very important actor as it protects you from outside noise, reducing and eliminating intensity.  Noise is annoying and on some occasions it can even affect psychophysical wellness. Poor acoustic insulation of a window may compromise your sleep at night or create stress.  The prestigious IFT, Institut fuer Fenster Technik (Intitute for Window Techniques) of Rosenheim, Germany, has certified NURITH windows also in terms of acoustic insulation.