Original heating trade vintage catalog for THE LAU BLOWER COMPANY. Main office and plant was located in Dayton, OH. Manufacturers of Niteair Rancher attic fans, designed for homes with low-pitched roofs. It pulls air vertically up through ceiling openings and exhausts the stale air out through louvers in gable ends or openings under the eaves. Panel units for residential, commercial and industrial fans adaptable for many applications in homes, apartments, stores, offices, theaters and industrial plants. Product specs and dimensions provided with installation steps listed. Disbound from a large 1954 home builders heating catalog, this unique old four page technical brochure would display wonderfully matted and framed. A marvelous addition to your retro heating equipment library. Pages are loose and may contain a small amount of residual glue on edge.