A closing device of a window provided in a structure, comprising a fixed part wherein an opening is defined, and at least one sliding movable panel guided along a top and a bottom guide rails mounted on a face of said fixed part, said movable panel being movable between:
- a closed position, wherein said movable panel seals said opening, said movable panel being in a first plane, called a sealing plane, defined by said fixed part, and
- at least one opened position, wherein said movable panel is in a second plane, called a sliding plane, substantially parallel with said sealing plane,
- each of said respective guide rails housing a shuttle, each shuttle being a rod sliding in the associated guide rail, each shuttle being provided with a front track and a rear track, the movable panel including two pins, a first pin cooperating with the front track and a second pin cooperating with the rear track,
- said front and rear tracks configured to ensure that the movable panel is switched from said closed position to said at least one opened position, and vice versa, and slidably moving said movable panel in said sliding plane, when each shuttle is moved in translation in the associated guide rail,
- wherein said bottom guide rail bears, at one of the ends thereof, an end fitting that includes a track for guiding one of said pins and forming a mechanical stop defining a stop position for the corresponding shuttle,
- and wherein said end fitting bears an element for managing water from said bottom guide rail, comprising a vessel to collect the water and a conduit connected to the vessel and extending below said vessel to discharge said water outside of the structure.