| Section Depth | Parts Required to install sections with top, middle and bottom decks | Starter Section | Add-on Section | Extra Decks each |
| 12" | End Uprights | 4 | 0 | 0 |
| Center Uprights | 0 | 2 | 0 | |
| 18" | Depth Retainers | 6 | 3 | 0 |
| Width Retainers | 6 | 6 | 2 | |
| 24" | Load Supports* | * | * | * |
| Decks | 3 | 3 | 1 | |
| 30" | End Uprights | 4 | 0 | 0 |
| Center Uprights | 0 | 2 | 0 | |
| Depth Retainers | 6 | 6 | 2 | |
| Width Retainers | 6 | 6 | 2 | |
| Load Supports* | * | * | * | |
| Decks | 3 | 3 | 1 | |
*For Load Support requirements see Storage Shelving Retainer (SSREL)