. Architect and engineer. Consulting EngineersDESIGNERS OF HEATINGAIR CONDITIONINGVENTILATING AND WIRINGSYSTEMS, MECHANICALAND ELECTRICAL EQUIP-MENT OF BUILDINGS 41 SUTTER STREET ROOM 710San Francisco California DINWIDDIE CONSTRUCTIONCOMPANY Builders of the nev; gymna-sium. University of Cali-fornia; Grace Cathedral,Russ Building and HartfordInsurance Building, SanFrancisco; Life ScienceBuilding, University of Cali-fornia, Berkeley. CROCKER BUILDINGSAN FRANOSCO The Architect and Engineer, May, 1933 73 McNEAR BRICK FOR Beauty andPermanence McNear Brick Company Main Office and FacloriesMcNEAR PO


. Architect and engineer. Consulting EngineersDESIGNERS OF HEATINGAIR CONDITIONINGVENTILATING AND WIRINGSYSTEMS, MECHANICALAND ELECTRICAL EQUIP-MENT OF BUILDINGS 41 SUTTER STREET ROOM 710San Francisco California DINWIDDIE CONSTRUCTIONCOMPANY Builders of the nev; gymna-sium. University of Cali-fornia; Grace Cathedral,Russ Building and HartfordInsurance Building, SanFrancisco; Life ScienceBuilding, University of Cali-fornia, Berkeley. CROCKER BUILDINGSAN FRANOSCO The Architect and Engineer, May, 1933 73 McNEAR BRICK FOR Beauty andPermanence McNear Brick Company Main Office and FacloriesMcNEAR POINTSan Rafael, Calif. San Francisco Office and Yard417 BERRY STREET A L A D D I N HEAT I I\ G Kntlineerinfi a n d 1 a\(iiir service for ivarm air htiit- iiiff and nir coi (iilionint/ Representatives in ever\ citv in Northern Cah- fornia. ALADDIN HEATING CORP. 5107 Broadway. Oakland OLympic 5424 APEX Blo-Air Fan Heaters Portable and Wall Types 1320 watts to 4000 wattsThermostat Control if Desired —-— ] Some- .* * thing. Heaters uselate the air instead of depending uponthe slow process of gravity heat and a greater amount inthe lower living zone of the room, withthe same consumption. Fan can beused without the heat for easily accessible at top. Canbe installed under windows. There is a complete line of Apex Airnnd Water Heaters. APEX Manufacturing Company Oakland. California £>Hj nbutors SANDOVAL SALES CO. 557 Market San Francisco APEX SALES CO. 1833 Industrial Ix>s Angelei The insulating material com-prises in general a layer of fibrousmixture constituting a filling be-tween layers of sheet materialwhich form what might be termedliners for the filling. The fillingconstitutes the main heat insulat-ing element, while the liners serveto hold the filling in place, andpreferably to keep moisture fromthe filling. The insulating mate-rial is ordinarily put up in the formof relatively long strips of theproper width to extend betw


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