Product Description: C.R. LAURENCE 1900BRZ CRL Dark Bronze 1900 Series Non-Handed Rim Panic Exit Device. These CRL 1900 Series Narrow Stile Panic Exit Devices are designed for 1-3/4" (44.5 mm) narrow stile aluminum doors, but can also be used with medium and wide stile aluminum, wood or hollow metal doors. The base is field sizeable, and fits doors 30" to 44" (762 to 1118 mm) wide and 1-3/4" (44.5 mm) thick. Ruggedly constructed with 3/4" (19 mm) throw cast brass latch bolt. Surface mounted adjustable roller strike included. This device is non-handed and is easy-to-install. For keyed entry, an optional Cat. No. DL911SC Series, or other brand, Rim Cylinder is required..