The S. Parker LL520 DCH lever trim is designed for key-controlled entry from the exterior while ensuring free egress from the interior when integrated with panic exit devices. This entry/storeroom function trim requires a key for outside access, making it suitable for applications where exterior control is necessary, such as commercial or classroom doors. It features a Schlage C keyway, one of the most widely used and open keying systems. Constructed for durability in high-traffic commercial environments, it typically utilizes a die-cast zinc lever and a steel mounting bracket. The trim has a Dull Chrome finish and is non-handed, allowing universal application on both left and right-hand doors. It is specifically compatible with S. Parker UL520 series and other UL52x panic exit devices, fitting a standard ANSI #161 cylindrical door preparation.