Whether you are replacing your sink or renovating the kitchen, you must always know your cabinet and countertop dimensions. If you are only replacing the sink, it needs to fit the existing cutout space. And if you are renovating, you may be able to install a larger sink by expanding the cutout.
Correct measurements are very important to ensure that enough space is allocated for the faucet, fixtures and other materials behind the sink. Your installer will also consider the bowl depth to ensure there is adequate space underneath.
This is the "Minimum Cabinet Size", and this size is noted next to each sink model in the BLANCO catalogue. Standard kitchen cabinets come in size increments of 3" (for example: 18", 21", 24", 27", 30", 33", 36" etc.).
The width (front-to-back measurement) of the sink that can be used is determined by this measurement.