A panel attachment system includes a panel, a casing, and a plurality of hangers that enable the panel to be secured in a pre-determined position relative to the casing. Each of the hangers is formed as an elongate strip having a single corrugation, with each hanger having a center portion, a first end portion, and an opposite second end portion. The plurality of hangers are positioned in length-wise alignment, with the first end portion of each hanger being attached to the second end portion of an adjoining hanger. The attached first and second end portions are secured to the casing, and the center portion of each hanger is secured to the panel to thereby secure the panel in a pre-determined position relative to the casing.