LOCKING PRIVACY: Use on doors requiring privacy, can be locked inside with a turn button and unlocked outside with provided release tool. Recommended for bedrooms and bathrooms FITS STANDARD DOORS: Fits standard size doors 1-3/8" to 1-3/4" thick, adjustable latch backset from 2-3/8" to 2-3/4" with just a twist during installation International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.