MIX three-dimensional aeration disc — a patented alternative to the conventional flat pad. The aerodynamic form fluidises product in three dimensions rather than along the wall, so it does not demix the product, leaves no build-up on the vessel wall, and uses less air for the same effect. The anti-tear fixing between the disc and the silo wall resists the shear loads that split conventional pads. Specified where cleaning between products matters, such as food and chemical duties.