Original heating trade vintage catalog for HEATILATOR INC. Main office was located in Syracuse, NY. Manufacturers of asbestos damper seal for the fireplace, stops the loss of house heat up the chimney and prevents down drafts from chilling the room. When the Pressure-Seal Damper is closed the damper blade rests snugly against a specially designed asbestos gasket. Then, a slight additional pressure on the damper handle firmly sets the blade against the gasket and locks it in place. No limit to mantel design, cool weather comfort for northern homes, summer homes in camps, cottages and hunting lodges, basement rooms. 3-Star Heatilator fireplace circulates warm air, will not smoke. Sizes, dimensions, chimney flue sizes, intake and outlet grilles are provided. Nine basic installations, illustrating various methods of locating intake and outlet grills shown. 9 plans are furnished as a guide in determining foundation size. Chimney details illustrate a typical installation tow two fireplaces in the same chimney, at basement and first floor levels. Disbound from a large 1956 home builders heating catalog, this unique old eight page technical brochure would display wonderfully matted and framed. Nice cover graphics. A marvelous addition to your retro heating equipment library. Pages are detached and may contain a small amount of residual glue on edge.