1.burglar proof steel window, with muntins on window frame 2.double open,with grille for security 3.white/black/blue color Regular size:H300xW600mm,single top openH300xW1200mm,double top openH600xW600mm,single openH600xW1200mm,double openH900xW1200mm,double openH1200xW600mm,single openH1200xW1200mm,double openH1200xW1800mm,three openH1500xW1800mm,three open and three top openopen directionMore ...