Roof module
A roof module is a complete top for a convertible. Such tops can be a softtop or a retractable hardtop which are produced by specialized convertible top suppliers and supplied to the Original [equipment manufacturer|OEM]s. The OEMs finally are completing their cars in their own production lines with these tops to a convertible.
Depending on the OEM it is possible that these suppliers are working as a full [service vehicle supplier] and are producing the complete cars. Car [Top Systems], Edscha and OASys (Automotive) are not full service vehicle suppliers and deliver only the top to the OEMs.