SC 919-00000-26D. The weather resistant Simplex 900 Series from dormakaba (formerly known as Kaba) is fully mechanical which eliminates the hassle of frequent battery replacement. The 919 is designed to suit doors with a thickness of 44mm-54mm and comes supplied with a medium-duty rim deadlatch.. Non-handed units. Reversible latch. Protective clutch mechanism. Fast code change whilst unit fitted