A scrubber configuration for controlling carbon dioxide levels in a shipping container containing respiring produce is disclosed. The scrubber is made up of a curtain which includes a gas-selective membrane having a CO2/O2 selectivity ratio greater than 1 : 1, said curtain being positioned close to and parallel with the rear wall of said container which includes a door, said curtain forming an air-tight seal dividing the interior of the container into a plenum chamber between said membrane and the (rear wall) door, and the remainder of the container in which the produce is placed. The structure also includes an air intake means for conveying fresh air from outside the container into the plenum chamber and an air output means for conveying air from the plenum chamber to the outside of the container. In contrast to current methods for controlling CO2 levels in shipping containers, such as the use of hydrated lime, the scrubber configuration of the present invention is efficient, relatively inexpensive, does not take up shipping space within the container, does not present handling or disposal issues, and is not permanently attached to the container. A method for controlling the carbon dioxide levels inside a shipping container containing respiring produce, utilizing the defined carbon dioxide scrubber configuration, is also disclosed.Linvention concerne une configuration de laveur permettant de réguler les niveaux de dioxyde de carbone à lintérieur dun conteneur renfermant des produits respirants. Le laveur est constitué dun rideau comprenant une membrane sélective vis-à-vis des gaz qui présente un rapport de sélectivité CO2/O2 supérieur à 1:1. Ledit rideau est positionné à proximité de la paroi arrière dudit conteneur et parallèlement à celle-ci, ladite paroi comportant une porte. Ledit rideau forme un joint étanche à lair divisant lintérieur du conteneur en une chambre de répartition dair, entre ladite membrane et la porte (de la paroi arrière), et le reste du conte
