Adjustable power supply housing with compensating air baffle

A housing for a power supply unit in a data processing system, comprising:

• a carrier bracket suitable for attachment to the power supply unit, the carrier bracket comprising a first plate and first and second arms extending from the first plate;
• a housing tray comprising a rectangular base plate and first and second sidewalls, parallel to each other, configured to engage the first and second arms of the carrier bracket;
• and
• a baffle comprising a rectangular baffle plate having a first edge hinged to the housing tray wherein the baffle is enabled to pivot around the hinge between a closed position with the baffle plate in contact with upper edges of the housing tray sidewalls and an open position, and wherein pivot points about which the baffle pivots are moveable with respect to the housing tray such that the housing tray and the baffle define an adjustable air gap;
• wherein exterior surfaces of the carrier bracket arms define a first set of tracks and the interior surfaces of the housing tray sidewalls define a second set of tracks suitable for engaging the first set of tracks enabling the carrier bracket to engage the housing tray wherein the carrier bracket and housing tray are slidable with respect to each other for adjusting a dimension of the housing enclosure.