Abstract: A removable insulating cover for a display type refrigerating cabinet is formed of spaced sheets of flexible plastic secured along their edges and along spaced seam lines extending parallel to the length of the cover to form narrow contiguous panels. Relatively thick layers of loosely packed glass fibers fill the panels. The cover is adapted to be suspended across the opening of the cabinet to prevent a transfer of heat through the opening and into the interior of the cabinet during certain periods of time.