Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 299
TURING COMPANY 228 STEEL ROLLING DOORS, SHUTTERS, ETC. CONSTRUCTION F. M. lo—Shutters of this construction overlap the opening on the sides and top andare especially well adapted for fire doors. Coil and grooves are placed on the face of the wall; theshutter is counterbalanced by springs and… … VERTICAL SECTION CROSS SECTION CONSTRUCTION No. F. M. lo
Building materials
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