National boilers, radiators, and specialties: catalog no26 . Openings for fresh-air inlets from back of radiators are asfollows: 5-section, 4^4 x 334 inch6-section, 7J4 x 3J4 inch7-section, 734 x 334 inch8-section, 834 x 334 inch9-section, 10^4 x 334 inch 10-section, 1034 x 334 inch11-section, 1234 x 334 inch12-section, 1234 x 334 inch13-section, 1634 x 334 inch14-section, 1634 x 334 inch All the above are outside measurements and Yi inch abovethe floor line. Bottom or floor openings may be made any width up to5 inches, measuring from back of base, and any length up to29 inches for a 14-sectio
National boilers, radiators, and specialties: catalog no26 . Openings for fresh-air inlets from back of radiators are asfollows: 5-section, 4^4 x 334 inch6-section, 7J4 x 3J4 inch7-section, 734 x 334 inch8-section, 834 x 334 inch9-section, 10^4 x 334 inch 10-section, 1034 x 334 inch11-section, 1234 x 334 inch12-section, 1234 x 334 inch13-section, 1634 x 334 inch14-section, 1634 x 334 inch All the above are outside measurements and Yi inch abovethe floor line. Bottom or floor openings may be made any width up to5 inches, measuring from back of base, and any length up to29 inches for a 14-section base, deducting 23^ inches for eachsection on shorter bases. Improved Cold Air Boxes These boxes are substantially constructed, being both stormand insect proof. Outside measurements are: No. 1, 53^ x 17 inches, No. 2, 8 x 25 inches. 48 NATIONAL PREMO RADIATORS Premo Two-Column Hospital Radiator
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Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectsteambo, bookyear1920
