Deltana commercial door hardware includes a 2-3/4" backset UL listed. Grade 1 lever locks has fixed through-bolts and Grade 2 lever locks have removable through-bolts. Locks are provided with a 6-pin solid brass cylinder C-Keyway standard, except locks for Interchangable Core cylinders( not provided with lock). Available finishes are Bright Brass, Oil Rubbed Bronze, Satin Chrome, and Stainless Steel.