The first magnetic lock with latch positioned at the center of the front plate permitting the reversibility of the door. A more silent and fluid mechanism which guarantees the successful outcome of the most flexible tests of duration using innovative materials. BACKSET 50 mm ...AXIS key: 90 mm /WC: 90 mm / cylinder: 85 mm ...FRONT PLATE height: 190 mm /width: 18 mm /thickness: 2.5 mm...SQUARE handle: 8 mm // WC: 6 - 8 mm perfect symmetry, total reversibility ,no constraint of installation, compatible with steel and aluminum frames. silence and fluidity during opening and closing cycle of the door / design: the side of the door is completely smooth / corrosion resistance