Like two-faced Janus, the god of Ancient Rome, this proposal is distinguished by the reverse position of the center seat of the triple to ensure the maximum isolation between passengers seated next to each other. While passengers seated on the side seats, aisle and fuselage, continue to be positioned in the flight direction as usual, the passenger sitting in the center is facing backwards. So “Janus” is a two-faced seat, in fact this arrangement allows all three passengers to be separated with a shield made of transparent material that isolates them from each other, creating a protective barrier for everyone. Each passenger has its own space isolated from others, even from people who walk through the aisle. Each place of the “Janus” seat is surrounded on three sides by a high shield that prevents the breath propagation to occupants of adjacent seats.