Richard Tuttle, Systems, XI, (2012), Wood, stain, vinyl, cloth, paint, metal, 41-7/8 x 71 x 46 inches/106.4 x 180.3 x 116.8 cm, Overall dimensions variable, Photograph by Kerry Ryan McFate, courtesy Pace Gallery, Image © Richard Tuttle, courtesy Stuart Shave/Modern Art, London and Pace Gallery, New York