Put your House in Order 
The C. A. DUNHAM COMPANY, Marshalltown, Iowa 
DIVISION SALES OFFICES: Chicago New York San Francisco 
Boston BRANCHES: Spokane 
Rochester 
Washington, D.C, 
Cleveland 
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Minneapolis 
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Dallas 
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Los Angeles 
C. A. DUNHAM COMPANY, Ltd., Toronto, Canada 
Branch Offices: Halifax Montreal Ottawa Winnipeg Vancouver 
DUNHAM 
Radiator Trap 
This device is one of the fun¬ 
damentals of the DUNHAM 
VAPOR HEATING SYSTEM. 
It is the trap known the world 
over to heating engineers as 
the device that revolutionized 
Vacuum steam heating. 
Leading architects every¬ 
where use it. 
H ad your home been Dunham heated this would have been a 
winter of comfort, of health and of economy. Radiators 
would neither have knocked nor pounded. Each room would 
have been comfortably, cozily warm, every hour of every day. 
The consumption of costly coal would have been amazingly low. 
You could have mechanically kept the whole house at any de¬ 
sired degree of heat all through the day and at another and lower 
temperature during the night. And without going near the cellar. 
Whether you have decided to build anew, to move or to abide 
where you are, now is the time to plan to put your house in order 
against the rigors of next winter by installing Dunham Heating. 
A steam fitter can Dunhamize a home. While the first cost of 
the Dunham Vapor Heating System is not the lowest figure at 
which heating equipment can be bought, in the end it is the 
cheapest. Write for full facts now. Ask for our free book, the 
3 H’s ; it is of absorbing interest. 
VAPOR HEATING SYSTEM 
