The first generation Marsden supplied radiator has a capacity of 1.1 gallons, 4 rows of tubes and l7l square inches of frontal area. The next generation (Stanpart) has a capacity of .62 gallons, 3 rows of tubes and l50 square inches of frontal area. The final (Stanpart) unit has a capacity of .55 gallons, 2 rows of tubes and l50 square inches of frontal area.

An alternative is the original Type 14 radiator with a l.0 gallon capacity, 3 rows of tubes and 2l0 inches of frontal area. Plus, it is much more pleasing to view with its polished brass, rounded top header tank.