An aisle containment apparatus having a pair of spaced apart upper rails and a pair of spaced apart lower rails positioned spaced apart from and below the pair of upper rails. A side blanking panel is secured to one of the pair of upper rails and to one of the pair of lower rails and a ceiling spans between the pair of upper rails. A fixed panel is secured to the pair of upper rails and to the pair of lower rails and a moveable panel is releasably secured to the pair of upper rails and is adjustably positioned along the pair of upper rails so as to position the moveable panel a predetermined distance from the first panel.