The width of the stripes in Frank Stellas 's black paintings were often determined by the dimensions of the lumber used for stretchers , visible as the depth of the painting when viewed from the side , used to construct the supportive chassis upon which the canvas was stretched .
The width of the stripes in Frank Stellas 's stripe paintings were determined by the dimensions of the lumber , visible as the depth of the painting when viewed from the side , used to construct the supportive chassis upon which the canvas was stretched .