1. The width of the sink is determined according to the width of the kitchen counter, and the width of the general sink should be about 10cm minus the kitchen countertop. At the same time, according to the characteristics of the domestic kitchen countertop size of 50cm~60cm, it can be concluded that the reasonable width of the sink is 43cm~48cm. The depth of the sink requires space for cabinets. The depth of the groove is also an important factor related to its price, under normal circumstances, the practicability of the sink with a large cleaning volume is good, and the depth is better at 20cm, which can effectively prevent splashing, at the same time, the depth is also an important indicator to reflect the grade of the sink, and the double tank sink with a depth of more than 18cm belongs to the high-grade product.

2. Now that we know the size of the sink, we also need to know a size data in the installation, that is, the opening size of the sink. So what is the opening size of the sink? The opening size of the sink refers to the size of the opening that needs to be cut when the sink you buy is embedded in the countertop. Generally speaking, the length and width of the opening is equal to the length and width of the sink minus 3cm, for example, for a 75×40cm sink, the opening should be 72×37cm.