S. Parker Hardware Extra Heavy Duty Ball Knobs – Passage Set Stainless Steel

8161- Series Cylindrical Ball Knob, ANSI- A 156.2, Series 4000, Grade 1, UL Federal Specification FF-H-106C. Lock Housing and Chassis – Cold rolled steel with zinc dichromate finish for corrosion resistance. Requires standard 2 1/8″ (53.97mm) bore through door. Backset: 2-3/4″,. Door Thickness: 1-3/8″ to 2″. Latch: Brass 1/2″ throw, UL- Fire Rated for 3 hour doors,. Guarded Latchbolt on all locking functions. Latch front: 1-1/8″ X 2-1/4″ for 2-3/4″ backset. Strike: 4-7/8″A.S.A. Cylinder: Solid brass 6 pin keyed 5, SC-1 keyway,. #1145 or AR-1 keyway. Locks will accept Lori plugs. Master key and Grand Master key available. Keys: 2 per lock. Handed: Non-handed. Finishes: US32D. Available Functions: Entrance, Passage. Trim: Knob 2-1/4″ dia., Rose 3″ dia.2 Stainless Steel Finish.