Abstract: A window blind for an arched or rounded window in which the blind when open rests in a horizontal stack on the base of the window and which closes to fan shaped disposition. The inner end of the stack is carried by a vertical slot and pivot means that permits the inner end of the stack to shift vertically in a plane that includes the axis about which the rounded outer portions of the window frame is formed. As the blind is closed to a fan shaped condition, the slot and pivot connection permits the inner end of the stack to drop so that the blind itself may be substantially the length of the radius of the circular window pane. Cord controls are provided so that an upward force is applied to the stacked blind to initiate closing of the blind.