Another option for a www.nivito.com kitchen sink unit is an undermount sink. A top-mount sink is mounted directly under the counter, resulting in a lip around the sink. The advantages of this style include easy installation and additional support. However, it is important to keep in mind that a top-mount sink is not suitable for every kitchen as the lip can trap grime and make it difficult to clean. A bottom-mount model is a popular choice for many homeowners.