Sushi curtains can be 24cm or 27cm. The materials of roller blinds are large and small. When we choose, we should choose the appropriate shutter size according to our daily actual needs, such as the size of laver used and food demand. Generally speaking, from the point of view of convenience, it is best that the shutter is about the same size as the laver used, and it can be slightly smaller, but it is best not to exceed its scope.