Door Windows

     Today the door windows are usually curved cylindrical (one curvature) or cask（twocurvature) glasses, sliding inside sealing channels fitted to door rails and operated withwindow regulators，connected to the glass by bonded brackets or pressed with rubber inbetween or hinged by pivoting clips snapped into the glass holes.

    For economy and mid-class cars, door windows use a single tempered pane of glass，the thickness of which over the years progressively decreased. Today, in order to obtainsignificant acoustical improvement, cars（mostly high comfort class) on the market arewith side laminated windows.