National boilers, radiators, and specialties: catalog no. 26 (1920)
National Radiator Company · National Radiator Company · leaf 33
found defective in manufacture. They areconservatively rated according to the accepted standards, buton account of the varying conditions surrounding their installa-tion, we do not guarantee our boilers except as above. Recommendation Both on account of increased efficiency and in the interest… … « * WIDTHOFFE ET
