Satin Nickel Miraloma Park Egg Knob - Passage. Both sides of the knob are always free to turn. Backset is Adjustable 2 3/8" - 2 3/4". The radius corner metal latch and radius corner full-lip strike are included. Fits doors 1 3/8" - 1 3/4" thick. Back Plate Rosette is 2 1/2" in diameter, Knob 1 3/4" x 2 5/16". Grade 3 Residential Lock. 25-Year mechanical warranty. 5-Year finish warranty.