Native Trails'' Sink Undermount Kit is a simple and secure method for undermounting any sink with or without a rim into a kitchen cabinet or bath vanity. It is highly recommended for NativeStone rimless sinks due to its easy leveling with multiple adjustment points. The Large kit, adjustable from 25" to 47" in length, works well in cabinets 27"-48" wide. It is best for most kitchen and bathroom cabinet installations. The Small kit, adjustable from 14" to 26" in length, is best for small (less than 27" wide) bathroom vanity installations for front-to-back installation of rimmed sinks in standard cabinets. Features:-Quick and easy installation provides secure support from underneath the sink or sink rim-Multiple adjustment points ensure even support-Installation: for undermount sinks being installed in wooden cabinets-Adjustable from 14" to 26" in length-Best for small (less than 27" wide) bathroom vanity installations for front-to-back installation of rimmed sinks in standard cabinets