These ship as one item per box no matter how many you order. My application was for drainage in my well sloped yard to avoid erosion and to control weeds. I laid down a fabric, then the geo grid, and then added 1 1/8th inch crushed limestone. It is water permeable and locked into place and can hold a car on it. These geo grids are near impossible to find in stores and this particular geo grid is the least expensive I could find. Each item comes with a small bag of plastic connectors that snap pieces together; They look dainty but they are only to hold two or more pieces together until you fill them in with your stone material. You can cut this item with a sturdy pair of scissors and I used the same steel pins for this as I used for the fabric underlayment material. This is an excellent product for a residential yard application of preventing erosion.