– Patented load bearing (Pos. 9) for longer life in function, low wear on moving parts ensure no deformation. – Patented connection of frame part with support elements (Pos.7; 8), installation without lifting door leaf, easier, faster and accurate. – Remove door leaf without any damage during repairs when door lock blocked. – Teflon coated bearing bushings giving maintenance-free service during life of product. – Concealed screw connection on frame part (Pos.3), no visible connecting elements. – Interchangeable modules create different design. – Burglar-proof guard if hinge mounted outward. – Direct access to adjustment screws without disassembly of component.