AD74-2160GY-5 Gray epoxy wire shelving 5-shelf add-on kit allows you to expand your starter kit by sharing a set of posts. Configuration options include straight line, back to back and right angles (L-Shape). Add-on kits come complete with 2 posts, 5 wire shelves and s-hooks. Additional shelves may be purchase separately. Please note units with add-on kits cannot be made mobile. Includes 2- 74" posts, 5- 21" x 60" shelves and 10- S-Hooks. Easy to assemble. Finish: Gray Epoxy.