Diplomat Suite Collection from Gainsborough. Hall and Closet Non-Locking Door Knob Set Founded in 1967, Gainsborough is a world leader in the design, manufacture and distribution of quality hardware. Features: Latch TypeSquare Strength with style Easy to install instructions Replaces most door hardware 10 Year Factory Warranty The handle is 2 1/4 inch diameter. Comes with all the mounting hardware and a template for doors 1 3/8 inch - 1 5/8 inch - 1 3/4 inch thick and a 2 1/8 inch door hole. Gainsborough made in Australia inchtechnical-info inchFor Complete Installation Instructions and Templates: inchhttps://www.dlawlesshardware.com//lib/dlawlesshardware/gains300install.pdf inch target inch_blank inch 300 Series Installation for the .PDF file. Large file please be patient.