TONNEAU COVER ASSEMBLY WITH A FLUID MANAGEMENT SYSTEM

A bed cap configured for attachment to a top surface of a bed wall defining a cargo area of a vehicle, the bed cap assembly includes: a first channel extending at least partially along a length of the bed cap and configured to collect fluid and/or debris; a first opening for evacuating the fluid and/or debris from the first channel; a tonneau cover supporting surface extending at least partially along the length of the bed cap, wherein the tonneau cover supporting surface comprises a planar surface that is arranged inboard of the channel in vehicle position; and a seal provided between the tonneau cover supporting surface and a bottom surface of a tonneau cover that is supported by the tonneau cover supporting surface.