When installed in a kitchen on standard (U.S) wall-mounted base unit cabinets, countertops are typically about 25-26 inches (635–660 mm) from front to back and are designed with a slight overhang on the front (leading) edge. In the UK the standard width is 600 mm (Approximately 24 inches). Finished heights from the floor will vary depending on usage but typically will be 35-36" (889–914 mm).