The "59" Knob is part of the Omnia Solid Brass Series
"All Omnia Knobs comes standard with 2-3/8" Backset (Latch), No. 013 "T" Strike, and are available for 1-3/8" Thick Doors"
Passage Function: Passage door hardware has no locking mechanism. Both the interior and exterior handles are always free making it perfect for hallways, closet doors, and anywhere else a lock isn't needed. Passage door hardware can also be used in conjunction with a deadbolt to secure a back door or entrance.
Features:
Constructed of high quality stainless steel for lasting durability
Installs easily with all necessary mounting hardware included
Specifications:
Backset: 2-3/8"
Cross Bore: 2-1/8"
Handing: Left, Reversible, Right
Handle Width: 2-15/16"
Handle Projection: 2-1/8"
Product Weight: 5 lbs
Latch Faceplate: Square Corner