Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 283
Fic. 3. AIR DIFFUSION BOX INSIDE VIEW OF MOBILE AND VICTORINSTALLATION The air diffusion box is provided with a piano-hinge shutter, by which the airsupply can be regulated and controlled at will. One or more of these hoods and diffusion boxes are mounted on a glazed panelor false sill (Fig. 3), or…
Building materials
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
