Lotus can provide glazed Acoustic Sliders in large format up to 3.0m high by 3.6m wide and 2.5m high by 4.5m wide, and solid Acoustic Sliders 3.0m high by 3.6m wide, all of which meet DDA compliant opening forces (20N). This is achieved via a load balancing system incorporated into the trolley, creating a low friction trolley which results in a constant operational force (proportional to weight) for sliders up to 411kg. For dual and triple sliders, DDA opening force is only required for the first panel of the wall.