All styles of Monarch Ranges may be equipped to heat a pressure or open boiler with one of the following styles of waterfronts. All waterfronts except 87 1/4F and 87 1/2F fit in all fireboxes, both regular and hard coal, of the thousand series. Also in the regular firebox ranges manufactured prior to the thousand series. 
Size of Pipe - All waterfronts are tapped for 1-inch pipe except 87 1/4 D, which takes 3/4 - inch pipe. Six-inch nipples are furnished with each waterfront, both when fitted in a range.