The A89LS aluminum door system is an ideal solution for connecting interior rooms with outside balconies, terraces or garden areas. Providing both smooth & silent sliding operation, it can bring the benefits of a beautiful day outside into your living space. By virtue of its design & operation, the A89LS is a great space-saving opening that does not encroach on free space beyond the internal or external confines of the frame, without any compromise. Available in two different options with regard to the level of thermal performance: standard or highly insulated. The design & arrangement of the system profiles enable luxurious openings of large dimensions, accommodating double & even triple glass unit compositions, which in conjunction with the constituent parts & innovative technical solutions, help achieve a high level of thermal & acoustic performance.