The Sizes of "Modern" Grand Pianos
| Model | Size | Year Introduced |
| S | 5'1" (155cm) | Introduced in 1936. |
| M M M |
5'6" 5'6-3/4" 5'7" (170cm) |
Introduced in 1912. Introduced in 1914. Introduced in 1918. |
| L | 5'10-1/2" | Introduced in New York, 1923. Discontinued from production in 2006. |
| O O O |
5'10" 5'10-1/2" 5'10-3/4" (180cm) |
Introduced in 1902. Introduced in 1914. Discontinued in New York 1923, but continued in Hamburg. Reintroduced in New York in 2006. |
|
A I (Round Tail) A II (Square Tail) A III |
6'0" 6'2" (188cm) 6'4-1/2" |
Introduced in 1878. Discontinued in 1896. Introduced in 1896. Discontinued in New York 1914, but continued in Hamburg. Reintroduced in New York 2005. Introduced in 1914, discontinued in 1945. |
| Monitor Grand B B |
6'8" 6'8" 6'10-1/2" (211cm) |
Introduced in 1872. Introduced in 1878. Introduced in 1885. |
|
C C |
7'2" 7'5" (227cm) |
Introduced in 1878. Introduced in 1886. Discontinued from regular production in New York 1913. Occasionally produced in New York through 1936. Currently manufactured in Hamburg. |
|
Centennial Grand D D D |
8'9" 8'10" 8'11-1/4" 8'11-3/4" (274cm) |
Introduced in 1876. Introduced in 1884. Introduced in 1914. Introduced in 1965. |