Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 573
Fig. +. THE A. & J. BASE. handling large volumes of air at a moderate speed. This style of fan can be readilychanged to suit conditions, such as moving a smaller volume of air at high pressure,in which case the wheel would be much smaller in width, or vice versa, when a largevolume or low…
Building materials
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