A rack door of a rack usable to store telecommunication equipment is provided. The rack door of the rack includes either a front door or a rear door of the rack and is equipped with at least two shutters of transparent injected polycarbonate with a front lens and an opening of 88% for air inlet or outlet. The rack includes an internal temperature indicator having an RGB LED ribbon configured to indicate, by changing colors, the temperature. Each shutter is attachable to at least one other shutter by a lower fitting and a top fitting, each shutter comprising a protective grid on a rear flat portion thereof, and side baffles to receive projection of light from the RGB LED ribbon.