Cardboard boxes from an Ikea sofa, there are 2 more nested inside. Could use to protect the floor when painting, or maybe for messy kid projects. Checking if someone wants them before they go to recycling. 80"h x 30"w x 12"d each Also other cardboard boxes of different sizes. biggest is 12.5" x 19.5" x 22" Pick up in Palo Alto, please take them, I need the space.