SEALED TYPE WINDOW SYSTEM

The present invention relates to a sealing type window system. The objective of the present invention is to provide the sealed type window system which has inner and outer sash frames slid along inner and outer rails installed at a window frame diagonally, and improves wind shielding, soundproofing, airtightness, watertightness and insulation features by making one side of the inner and outer sash frames adhere to each other only when the sash frames are closed, and allows smooth movement of the inner and outer inner and outer sash frames and natural ventilation when the inner and outer sash frames are opened. The sealed type window system of the present invention includes: the window frame which is installed on a wall of a building; the inner and outer rails which are installed at the window frame diagonally; and inner and outer door rollers which are installed at a diagonal line at the lower part of the the inner and outer sash frames to coincide with the direction of the inner and outer ...