Matching backplates for mortise locks—aluminum backplates (EV1) 30 × 245 × 10 mm for a 92 mm distance with 3 holes, optionally with a door handle already permanently mounted, reversible for left or right-hand operation. Also available are stainless steel backplates in V2A (AISI 304), approximately 32 × 220 × 6 mm. They accommodate the cylinder and handle and neatly cover the operating side of tubular-frame doors.