SIMPLEX/UNICAN medium duty 16mm rim deadlatch.Mechanical retraction of latch upon entry of correct sequence of code.Outside operation by thumbturn on operation of code- inside by thumbturn - free exit; hold back facility; non handed units; reversible latch, protective clutch mechanism; fast code change while unit is fitted; suitable for rebated doors.; suits doors 44mm - 54mm thick. Satin Chrome and Satin Brass.