Tell Ball Style Light-Duty Commercial Hall & Closet Knob

(KT2175). Light-duty commercial passage ball knob. Satin stainless steel (US32D) finish. Performance complies with ANSI A156.2 (American National Standards Institute), Series 4000, Grade 2 (400,000 cycles). UL (Underwriters' Laboratories) listed for 3 hour fire door. Door range: 1-3/8" to 1-3/4". Backset: Adjustable 2-3/8" to 2-3/4" standard. Strike: T strike (1-1/8" x 2-3/4") standard. Tubular construction. Latchbolt operated by interior or exterior.