A lighting fixture includes first and second elongated lamp carriage assembles supporting respective first and second elongated lamps and an enclosure including first and second spaced plates. The first lamp carriage assembly is fixedly coupled between the first and second plates for directing light output by the first lamp in a first direction. The second lamp carriage assembly is slidably and pivotally coupled at its ends to the first and second plates for directing light output by the second lamp in a second direction that crosses the first direction. The lighting fixture can further include a third elongated lamp carriage assembly supporting a third elongated lamp. The third lamp carriage assembly is slidably and pivotally coupled at its ends to the first and second plates for directing light output by the third lamp in a third direction that crosses the first and second directions.