A dual evaporator air conditioning system and method for use therewith is provided to cool air in front and rear portions of a cabin of a vehicle. The U-shaped bars maybe of tubular construction and have a flat surface and are preferably angled from the side bar at an angle of approximately 45 degrees and each U-shaped bar has end portions that meet the center bar at an angle of approximately 0 to 45 degrees. The fixed drum may have a non-circular cross-section as it is rotated. The first tab is connected to the first arcuate member over a distance less than the width of the first tab.