Abstract: A sun blind for a window, in particular a window occupying permanently or temporarily a slanting position and optionally being operative to be toppled about a horizontal axis, said sun blind comprising a horizontal profiled top bar fastened to or integrated with the header of the window frame, a horizontal profiled bottom bar operative to be moved with respect to said top bar, a sun blinding portion between said top bar and said bottom bar, lateral guides for guiding the ends of the bottom bar, said guides being provided along or within the side posts of the window frame, at least two cords running through apertures in the sun blinding portion and optionally an additional profiled bar along the bottom sill part of the window frame, whereby said cords serve solely for guiding the bottom bar and the sun blinding portion, while the ends of all cords are fastened to fixed points of the top bar, the bottom bar or the lateral guides of the sun blind.