Donald Judd 

Untitled

, 1963

Oil, plywood and iron pipe

22 1/8 x 45 3/8 x 30 1/2 inches (56.2 x 115.1 x 77.5 cm)

Hirshhorn Museum and Sculpture Garden. Smithsonian Institution. Joseph H. Hirshhorn Purchase Fund, 1991

Photo by Lee Stalsworth 
© Judd Foundation / Artists Rights Society (ARS), New York