Abstract: The invention relates to a cart-window assembly including a cart for moving material to/from a clean room and at least one window adapted to allow the communication between a dirty space and said clean room; wherein said cart includes: a compartment, at least one protected door adapted to alternatively allow accessing the compartment and hermetically closing the compartment, a ventilation system, and first interface means surrounding the protected door; wherein said window includes: a panel which can alternatively be open or sealingly closed and second interface means extending along the periphery of the panel; wherein the first interface means and the second interface means are mutually complementary and allow the cart to be firmly coupled to the window in a reversible manner, so as to define a gap therebetween which is sealingly closed.