The manually operated mechanism raises shades evenly, without piles of cords. With today's heavier shades, the 3-to-1 mechanical lifting advantage makes specifying the Rollease Acmeda Operating System even more important than ever. By simply pulling on either side of a control cord or bead chain, the operator can quickly and precisely position any shade that weighs up to 30 pounds (14 kg). Left-hand or right-hand control can be specified.