C.R. LAURENCE 311285SL37313 CRL Dark Bronze 36" Jackson 1285 Push Pad Concealed Vertical Rod Left Hand Reverse Bevel Panic Exit Device, Smooth Finish. This sleek, contemporary CRL Jacksonr Concealed Vertical Rod Panic Exit Device is designed for use in 1-3/4" (44 mm) narrow stile aluminum doors. Also may be used with medium and wide stile aluminum and hollow metal doors. Sized for 36" standard openings. Features trigger action locking release and positive 5/8" (15.9 mm) top and bottom bolt throw..