Composition in black, gray and white tones. Contour lines and shaded areas. Representative abstract composition, finding itself in the center, large irregular shape outlined by thick and strong line and the lower on the left corner of the rectangular area defining will store the books door part of the wall that would be covered by the tile panel. Inside the central area to the right, half white circle and dark half, winding line forming zigzag next to it and also several scattered irregular shaded areas. Skirting this central area, other smaller uneven areas, some clear other darker. Two parallel rows in diagonal on the left to the right, top to bottom, traverse the entire composition, suggesting the beginning of a grid.