The privacy door knob from Reliabilt features a traditional style with an antique brass finish and is best used for interior doors that require locking such as bathrooms and bedrooms. It is easy to install and fits doors with a 1.38 to 1.75-inch thickness. ANSI grade 3 standard. 4 way adjustable latch (2.38-in to 2.75-in backset). 2.56-in rose. Lifetime mechanical and finish warranty.