L Series Mortise Lock The L Series mortise lock offers strength and security for almost any commercial application. Select Sweets ProductTAG to Annotate Content Overview Features & Benefits Functions Certifications Downloads The Schlage L Series has long been the benchmark for mortise locks. The L Series is more than strength and security – it offers tremendous flexibility to allow it to meet the needs of most every application. Over 50 functions, 33 lever and knob designs, 5 different roses and escutcheons, and a multitude of prep options are just the beginning. 180 degree visibility indicators, advanced motor-driven electrified functions, a universal lock case that supports 10 different functions, and the ability to suite across tubular, exit device, and multipoint locks allow the Schlage L-series mortise to integrate seamlessly into any environment.