New multiple interlocking systems with flat rods and cams from EMKA offer an excellent solution that can ensure large doors are locked evenly over their entire height or circumference. This means that with up to seven closure points – or more with extensions, so that when operating just one handle, several locking points are locked synchronously while achieving a sealing performance of IP65 and providing the added security of closure points at intermediate spacing around the perimeter of the door. This new system provides designers and installers with the option of placing the swinghandle or other door lock at various positions on the edges of the door/frame to allow for easier access. A compression version is also possible that provides 4.5mm gasket pull-down and the added benefit of vibration resistance.