Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 213
Fig. \U. Combined Heater aud Centrifugal Fan with Direct-Connected Engine. … Fig. 1 ir>. Centrifugal Fan in Three-Quarter Housing. Used where Headroom isLimited; Extra Space Provided by Pit under Floor-Level. 172 heatinct and ventilation 163 Fans are made botli witli double and with single inlets, theformer beinjj; called hloivers and the latter exhausters. The size ofa…
Architecture · Building · Carpentry
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