A component carrying tray is removably mounted in a luminaire housing. The luminaire housing has a pair of thumb screws that fit in a pair of key holes shaped opening in the tray so the tray can be removed with one hand. To disengage the tray, a maintenance person simply loosens the thumb screws one quarter turn to align them with the holes, lifts the tray off the thumb screws with one hand, and then pulls the tray out of luminaire housing.