An inhalation spacer movable between a collapsed configuration and an expanded configuration. The spacer is made from paperboard having a bending stiffness of at least 2.5 mNm. The paperboard may have a first bending stiffness in a machine direction and a second in a cross direction. The paperboard may have a first bending moment in a machine direction and a second in a cross direction. The paperboard may have a first tensile strength in a machine direction and a second in a cross direction. The paperboard may have a first tearing resistance in a machine direction and a second in a cross direction. The paper board may comprise fibers between the lengths 0.9-1.2mm, 2-3mm and 3.1-3.5mm the paperboard may be virgin paper board or solid bleached paperboard. The spacer may have an internal cavity providing an air flow-path between an inlet aperture and outlet aperture.La présente invention concerne une chambre d'inhalation mobile entre une configuration aplatie et une configuration déployée. La chambre d'inhalation est faite de carton ayant une rigidité à la flexion d'au moins 2,5 mNm.
