... housing is in plastic-sprayed coat or rolled, iron plate or aluminum paned, best in corrosion protection, beautiful in shape.2 ... in power consumption, large in air volume, low in noise, and far in air throw, guarantees good performance in humidity ... U-shaped electro-thermal tube that's good-in insulation inside the coil, rational gap arrangement ... ///3/4″ Evaporator for walk in chiller or cold room