FRED SANDBACK Untitled (Vertical Corner Piece) [RRR] 1968 Fluorescent blue acrylic on 1/32-inch diameter spring steel and elastic cord in three units each: 36 x 2 x 3 inches 91.4 x 5.1 x 7.6 cm 2 inch (5.1 cm) space between units height: 112 inches 284.5 cm Letter of authenticity Estate of Fred Sandback No. 2118.1 SANFR0129