Ketav Alter Rebbe is the distinctive scribal script of the Chabad-Lubavitch tradition, established by Rabbi Schneur Zalman of Liadi — the first Rebbe of Chabad, known as the Alter Rebbe. Drawing on both the revealed laws of Torah and the Kabbalistic tradition, the Alter Rebbe crafted this script to harmonize the various halachic opinions on the formation of each letter, resulting in a ksav that satisfies a remarkably broad range of authorities. A mezuzah written in Ketav Alter Rebbe is the preferred choice for Chabad households and makes a meaningful gift for anyone connected to the Chabad-Lubavitch community