SALZER’s high security steel door series S4 convinced a high-profile international jury and received the German Design Award. The award distinguishes innovative products, as well as their manufacturers and designer, which are pioneering in the German and international design world. Günter Ludwig, who is responsible for the development and production of the door, explained that the steel door is a flexible modular construction system that can offer the varying protection levels requested by the clients and, at the same time, fulfilling esthetical requirements. Some of the design possibilities include the use of large glazing, variations of orientation and sizes, as well as an unlimited prospect for surface finishes and individual hardware solutions. In addition, each door is custom made according to the customer’s security and design requirements. The goal is to offer ‘invisible security’, which has been achieved by SALZER with the achievement of the German Design Award. The steel door has been tested and certified at independent international test institutes in accordance to the European Standards to the highest levels of resistance: Forced Entry (up to RC6), bullet resistance (up to FB7 NS), explosion resistance (up to EXR5), fire resistance (up to T90 and BS 476 120 minutes) smoke resistance (RS-1 and RS-2). SALZER has been manufacturing and delivering custom made doors, windows, facades, barriers and guard houses in various different security resistance classes for more than 40 years in over 90 countries around the world. The services it offers also include installation and maintenance.