I used four 7/8" S-hooks to secure the shelf in the wire storage cube. There are two S-hooks holding the shelf in the front left and right sides. There are two S-hooks mounted on the back panel left and right to keep the shelf from sliding forward. Although zip ties will work, the S-hooks allow more flexibility in adjusting the height of the shelves. I love that each pot is stored with its lid. There are 12 pots and pans stored in this organizer.