Willow Slab Willow 1. The length is 101 inches long. The widths are 21, 32, 26, 32, and 28 inches. Flattened thickness of 1 3/4 inches. In person sales takes precedence over web sales. Come see the slab in person. The website is updated frequently but there is a chance something online could be sold already. Feel free to email and inquire about specific slabs. Local pickup only, call/email for more information or to schedule.