Model Variants (Including Prototypes)
D.I - Base Production Biplane; 700 examples produced from 1917 to 1918.
D.II - Based on the D.I; cantilever lower wing assembly; production beginning 1918 in Series 39 and Series 339 marks.
D.III - High-altitude variant; fitted with Hiero piston engine of 230 horsepower.
Dr.I - Proposed Triplane Development; prototype forms only.