What is the difference between a kosher and non-kosher Mezuzah?

The difference between a kosher and a non-kosher Mezuzah primarily lies in the religious and ritualistic requirements pertaining to the scroll that is placed inside the Mezuzah case as well as the manner in which it is prepared. A kosher Mezuzah contains a handwritten parchment scroll known as a klaf that is inscribed with specific Hebrew verses from the Torah, specifically the Shema Yisrael prayer as well as other passages. This scroll must adhere to strict guidelines and be written by a qualified scribe, known as a sofer, under meticulous conditions ensuring that it is free of any errors or omissions. On the other hand, a non-kosher Mezuzah may contain a printed or mass-produced scroll that does not meet the halakhic requirements. These printed versions may not uphold the sacredness or accuracy mandated by Jewish law, and hence do not qualify as kosher. Additionally, the case in which the scroll is housed should also be designed suitably, but it is primarily the scroll that determines the kosher status. Purchasing a Mezuzah from reputable sources like Mezuzahmaster.com can help ensure that one obtains a kosher Mezuzah if that is what one is seeking. It is also essential for individuals to check for verifying information related to the scroll's author and certification to ensure that it complies with kosher standards. To find specifics on kosher options, visiting the appropriate sections of Mezuzahmaster.com can provide more insight and clarification on this important aspect of Mezuzot.