An apparatus is provided for housing cargo-moving devices in a cargo handling system. The apparatus comprises a variable width tray having a wide section, a narrow section, and a transition section for connecting the narrow section to the wide section. The narrow section is configured to house narrow cargo-moving devices such as rollers and lock/stops, while the wide section is configured to house wide cargo-moving devices such as power drive units. The variable width tray can be further configured to mount within a transport vehicle such as a commercial aircraft.
