Horti-Trellis is a professional plant support trellis for horizontal or vertical applications. It's made of pliable plastic for multiple uses and unlike string net trellis, it will not tangle. The Horti-Trellis is 48 in wide with 6 in squares. Use vertically w/support stakes. Use horizontally with hydro systems. Made with durable plastic and can be used over and over. Will not tangle. Botanicare® Horti-Trellis Rolls have a 3-inch core diameter.