Reversible Handing Applications: Residential single and multi-family entrance doors. Patented Throughbolt Slides Up and Down So You Don't Have to Patch/Redrill Your Door Lifetime Mechanical & Finish Warranty Keying: F-Series handlesets are 5-pin tumbler with two keys per lock. Certified Commercial Grade 1 Graded Best in Residential Security, Durability, and Finish Backset: Universal latches and deadbolts fit 2-3/8" (60mm) or 2-3/4" (70mm) backsets.