Original heating trade vintage catalog for BROOKSIDE CORPORATION. Main office was located in McCordsville, IN. Manufacturers of M-Pel-Air power roof exhausters, low silhouette, whisper quiet. Brightest new star in power ventilators. Type A, B and C are pictured. Exposed parts are built of rigid spun aluminum for strength, pleasing appearance and resistance to every weather extreme without the need of special finishes. Chart with performance characteristics is provided. Unbound from a large 1958 architectural catalog, this unique old four page technical specifications brochure would display beautifully matted and framed. Nice cover graphics. A fantastic addition to your retro ventilation library. Pages are detached and contain a small amount of residual glue on edge.