Dan Flavin 

untitled (to Sonja)

, 1969

Approx. 32 ft. (976 cm) long  
Left section: modular units, each made with two 4-foot (122 cm) vertical fixtures and two 4-foot (122 cm) horizontal fixtures  
Right section: modular units, each made with two 8-foot (244 cm) vertical fixtures and two 8-foot (244 cm) horizontal fixtures

© Stephen Flavin/Artists Rights Society (ARS), New York