Lid Supports - How to select the proper one for your SkyBox, ShowCase or RocketBox Dave Dezellem Updated December 23, 2017 19:29 Follow The chart below will identify which lid support is need for your box. If you do not see your box listed please contact customer support here, or by phone at 888-925-4621 M-F from 7 to 4 PT. To order the lid supports click here 8880683 or 8880684 Lid Support.pdf 2 MB Download Related articles Cacked Cargo Box Lid Do you sell Cargo Box and Cargo Basket Replacement Parts? How do I remove the lock cores from my box? Where can I get an Instruction Manual? How do I know if my cargo box will contact my rear hatch? Comments 0 comments Please sign in to leave a comment.