Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 178
14 STEAM AND HOT WATER FITTING Direct-Indirect Radiators. A direct-indirect radiator is shownin Fig. IS. The air enters through a louver-ed or slatted wall opening with screen. Pro-vision is made to shut this off and admit airsimultaneously from the room, making theradiator essentially a direct…
Architecture · Building · Carpentry
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