Deltana Universal Handing Chapelton Lever Passage Deltana Port Royal Series levers made of solid brass, designed to match with doors 1 3/8" ~ 2" in thickness, and have an adjustable backset of 2 3/8" ~ 2 3/4". Specifications: U/M: Each Additional Deltana Information PRCLR3U Specification Sheet View Deltana Manufacturer Warranty Shop All Deltana Products Do not use prints made from this website to mark distances. Due to individual printers, dimensions on installation instructions may not print at an accurate scale.