In H-technology with rosettes according to DIN 18255 and DIN EN 1906 made of stainless steel, with a matte brushed surface, consisting of: Door handle model 111X made of stainless steel round tube (1.4301), diameter 21.3 mm with a wall thickness of 1.5 mm, featuring a guiding edge and locking groove, with an M5 threaded pin as additional fixation of the door handle with the square pin for optimal power transmission into the door leaf. The handle meets the requirements of DIN EN 179 and DIN 18040. Installation is done by simply snapping the door handles into the pre-mounted components on the door. The locking mechanism can be released using a disassembly key. Surface is matte brushed. Rosettes 305.21X and 306.23X, substructure 305.21X in plastic-steel composite construction with a black zinc/nickel surface for optimal corrosion protection, integrated hold-up module with spring support, usable for DIN left and DIN right, to support the lock for a longer lifespan. Fixed rotating bearing of the handles with self-locking all-around locking and a 5 mm bearing point as a maintenance-free sliding bearing with elastic compensation area to accommodate possible installation inaccuracies. Concealed, loosening-proof screws with M5 stainless steel screws and sleeve screw combination as well as support pins that dip into the door leaf. WC version with emergency opening using a square spindle or coin and viewing window (indicator red/white) on the outside. Round rosette cover cap made of stainless steel (1.4301), diameter 55 mm, height 10.5 mm, wall thickness 1.5 mm. Designed and tested for the object area, usage category according to DIN EN 1906 - Class 4 set with 8 mm square pin. Usage category: Class 4. Durability: Class 7. Door dimensions: no classification specified. Fire resistance: Class 0. Security: Class 1. Corrosion resistance: Class 4. Burglary protection: Class 0. Type of execution: A. Additional technical features: fastening system: H-technology.