Product Description: Pioneer Series Heavy Duty SL Design Exit Function Door Lever SetThe Pioneer SL50 exit lever is an exit only lever. The inside lever is always unlocked and has a blank plate for the outside of the door. The Pioneer series is hurricane approved hardware by the Florida building code and individual springs on each side to prevent lever sag, 1/2" solid brass throw latchbolt and is UL listed with a 3 hour fire rating. Features:Florida Hurricane Approved: FL13922 Building CodeConcealed Screw MountingCylindrical BodyMeets ADA Barrier Free RegulationsUL 3 Hour Fire RatedANSI A156.2Grade 2Specifications:Lever Length: 4-3/4"Lever Projection: 2"Rose Diameter: 3-5/16"Door Thickness: 1-3/8" to 1-3/4"Standard Backset: 2-3/4"Crossbore: 2-1/8"Edgebore: 1"Faceplate: 2-1/4" x 1-1/8"ASA StrikeCal-Royal has focused on providing "Innovative and Value Added" hardware products and accessories to the builders industry since 1983. In accepting this charter, Cal-Royal has continued to be the leader in import hardware. Their product offering is designed to comply with the Americans with Disabilities Act (ADA) and to encompass all levels of ANSI classification, Grades 1, 2 and 3 as well as UL requirements. They offer a complete line of mortise locks, exit devices, door closers, hinges and many other hardware and trim products.