8916-BN Thick door kit Finish/Color: Brushed NickelMaterial: Brass / steelDimensions: For 2-1/4" thick doors (± 1/8")Finish Options: OB | BN | PB | PN SKU: 8916-BN Categories: Door Locks and Latches, Locks and Keys Description Description Kits to adapt mortise lock sets for thicker doors. Kit includes #8878 strike plate, 1-3/8″ long keyway cylinder, and two spindles of 4″ and 4-1/2″ length.