The invention relates to a box (1) which is used for arranging a nozzle, in particular to an air coating nozzle or an air texturing nozzle (3). The box is equipped with at least one filament passing hole (10, 11, 12, and 13) and a box cover (5). The filament passing hole is equipped with the filament passing hole circumference (20). The box cover covers a box opening on a box bottom (15). The boxcover (5) is conjugated with a box bottom ridge (18) on the box bottom (15) through a box cover ridge (17). The filament passing hole (10, 11, 12, and 13) is arranged on the box bottom ridge (18) in such a way that one part of the filament passing hole circumference (20) is composed of the box cover ridge (17).