Four-Way square diffuser for air supply with removable decorative core. The DIMO series modular diffusers are designed to be applied in air conditioning ventilation and heating systems. This sort of diffuser can be used in premises from 2,6 up to 4 meters high and with a temperature differential up to 12º C, obtaining good results, not only in air speed but also in sound pressure level in the comfort zone. The DIMO diffuser causes a 4- way horizontal air supply with coanda effect. Its removable core can be replaced by a piece of false ceiling plate in order to maximise its integration within the interior architecture. The DIMO modular diffusers meet the functional requirements of modern updated locations. Its design fits perfectly in the technical false ceiling.