Description: This 15-by-15-by-15 foot cube is part of the finals for the National Dairy Council’s Nutrition & Fitness Challenges. The other main ingredient of the Power Cube is the printed graphics that cover all six sides of each box. That’s 750 sides by 9 square feet per side, which is almost 7,000 square feet! Avery Graphics, makers of mailing labels and other self-stick materials, stepped up to the plate and donated the super wide self-adhesive vinyl to print and then adhere to the sides of the boxes.