Compatible Tabletop Sizes: Table Length for Main Desk at 24' Width: 47.9' to 79.7', Table Length for Main Desk at 36' Width: 53.9' to 85.7', Table Length for Return Desk at 24' Width: 39.2' to 61', Table Length for Return Desk at 36' Width: 33.2' to 55' Build Your Workstation: Recommended to use a desktop that is 3/4' or greater in thickness. Creates an L-shaped standing desk when table tops are installed for the ideal corner workstation (table tops must be purchased separately)