Document EvnrYgrR4BY8m5pGEVvN7gJB0

v iWf sS5^SJ',t TEXT AND ILLUSTRATIONS ARE FULLY PRO TECTED BY COPYRIGHT AND NOTHING THAT APPEARS MAY BE REPRINTED EITHER WHOLLY OR IN PART WITHOUT SPECIAL PERMISSION. \ Printed and Bound by Tbs Hobm-Shafer Company BALTIMORE >; MARYLAND Heating Ventilating Air Conditioning GUIDE 1938 An Instrument of Service prepared for the Profession--Containing a Technical Data Section OF REFERENCE MATERIAL ON THE DESIGN AND SPECIFICATION OF HEATING, VENTILATING AND AIR CONDITIONING SYSTEMS--BASED ON THE TRANSr C actions^-the Investigations of the Research Laboratory and o operating Institutions--and the Practice of the Members and Friends of the Society TOGETHER WITH A Manufacturers' Catalog Data Section Containing Essential and-Reliable Information Concerning Modern Equipment ALSO The Roll,of Membership of the Society ; y * . with ; ; -i'J ' Complete Indazes ' ; to Technical and Catalog Data Sections VoL 16 $5.00 Per Copy X685974 Copyright, 1938 AND Published Annually by 1J *Avmerican Society of Heating and Ventilating Engineers 51 Madison Avenue N.New York, Y.