Trans-Atlantic DX-LSV80 Satin Chrome US26D, Always Locked Vestibule Storeroom Grade 2 Commercial Cylindrical ADA Angled Lever Lockset, outside lever rigid, Entry by key only. inside lever always free FOR DOORS: 1-3/8" to 1-3/4" thick BACKSET: 2-3/4" CASE: Corrosion treated heavy gauge cold roiled mechanism FRONT: Wrought Brass or Bronze 2-1/4" x 1-1/8" STRIKE: Wrought Brass or Bronze 4-1/8" x 1-1/4" standard LATCHBOLT: Solid Brass 1/2" throw, reversible for RH or LH applications, adjustable front for flat or beveled doors 1-3/8" x 2" KEYING: 2 keys per lock FINISH: US26D UL LISTING: UL Listed for "A" Label (3 hours) single swing doors (4'x9') CERTIFICATION: Conforms with ANSI A156.2, Series 4000, Grade-2 Complies with provision of title 19, California State Fire Marshall.