Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 537
THE PERFECT FRESH AIR INLET VALVEDetail Showing Construction … HCXJSE DRAIN Fic. 2. METHOD OF SETTING THE PERFECT FRESH AIR INLET VALVE WHERE THERE IS NO AREA IN FRONT OF BUILDING Showing mouth of Inlet coming out through wall of building above sidewalk The method of setting the Perfect Fresh Air Inlet Valve in buildings and dwell-ings will readily be…
Building materials
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
