Baldwin Reserve DCCOLXROUTSR152STHK Double Cylinder Columbus Handleset with Round Knob and Traditional Square Rose with Smartkey For Thick Door with 6AL Latch and Dual Strike Matte Antique Nickel Finish. Specifications: Category:Residential Locksets - Sub Category:Handlesets - Finish:Matte Antique Nickel - Function:Double Cylinder - Series:Reserve - Design:Columbus Handleset with Round Knob and Traditional Square Rose - Strike:Dual Strike - Backset:6 Way Adjustable Latch, 2-3/8" or 2-3/4" Backset - Additional Information: Columbus Handleset With Round Knob ; Adjustable 2-3/8" Or 2-3/4" Backset ; Adjustable Ctc ; Solid Forged Brass Construction ; Limited Lifetime Mechanical Warranty and Limited 25 Year Finish Warranty ;