Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 574
ve in operation. These fans are particularly adapted for ventilation of malt kilns, laundries, papermills, drying lofts and other similar work, requiring the circulation of large volumesof air where there is no great amount of resistance to overcome. These fans are constructed of sheet steel and…
Building materials
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