Abstract: A head rail for an adjustable roller shade has two tubes and an extension bar. Each one of the tubes is circular in section and has an adjustment slot and a fabric slot. The adjustment slot is longitudinally formed in a periphery of each one of the tubes. The extension bar is adjustably mounted in the tubes. The tubes are fastened on the extension bar with a short exposed portion of the extension bar to form a desired length of the head rail. Additionally, when the exposed portion of the extension bar is long, the head rail further has at least one connection sheath sleeved around the exposed portion to strengthen the head rail and prevent a shade fabric mounted in the fabric slot from being ruffled or twisted when the head rail is rotated.

Abstract: A window blind is mounted within a rectangular box having two opposite opened ends. The box has a longitudinal length shorter than the width of the window blind such that two end portions of the blind extend beyond the opened ends of the box respectively. Spacers are provided by tabs integrally formed on top and bottom panels of the box, which are foldable downward inwardly to locate between the slats and the head rail of the blind. The spacers press the slats and the head rail respectively tightly against the side panels of the box, and they also provide the required space for locating the end portions of the slats and the head rail in the cutting means of a trimming machine for trimming the window blind to a desirable width.

Abstract: A window blind is mounted within a rectangular box having two opposite opened ends. The box has a longitudinal length shorter than the width of the window blind such that two end portions of the blind extend beyond the opened ends of the box respectively. Spacers are provided by tabs integrally formed on top and bottom panels of the box, which are foldable downward inwardly to locate between the slats and the head rail of the blind. The spacers press the slats and the head rail respectively tightly against the side panels of the box, and they also provide the required space for locating the end portions of the slats and the head rail in the cutting means of a trimming machine for trimming the window blind to a desirable width.