Master Garden Products Carbonized Skinless Willow Expandable Fence Can be used indoor and outdoor. Expands horizontally or vertically to different heights and lengths. Use as a fence, divider, climbing plant support, or trellis. Diamond openings expand to 3 inches. 48"H x 72"W Carbonized peeled skinless willow sticks are about 1/4" to 3/8" thick.