Modular outswinging casement window

The utility model provides a modular outswinging casement window relates to field of doors, attach the frame including casement, switching -over frame, window frame and steel, the steel attaches the frame and is used for fixed mounting at the window opening part, and the window frame detachably install on the steel attaches the frame. The casement includes care clamp, breakhead fan, first drainagefastener and holding glass, and holding glass joint is in care clamp, and first drainage fastener is the cavity form and runs through the breakhead fan. The switching -over frame includes the bearingframe body, connecting frame and second drainage fastener, bearing frame body fixed connection in connecting frame, and connecting frame detachably connects in the one end of window frame, bearing frame body overlap joint in the other end of window frame. Bearing frame is internal to have the inner chamber, and second drainage fastener is the cavity form and runs through the bearing frame body for it is connected the cham