14 



WISCONSIN BULLETIN 266 



FIG. 8. MUCH DEPENDS ON OUTLET FLUE 



The success of a ventilating system depends to a considerable extent upon the 

 outlet flue. The opening of the foul air flue is placed one and one-half feet above the 

 floor. In this construction water-proof building paper is placed between the two 

 layers of seven-eighths inch flooring. 



