Medlight Light Box The Medlight Light Box provides relief from winter blues and Seasonal Affective Disorder (SAD). The Medlight light box delivers 10,000 lux of full spectrum light to ward off the effects of the winter doldrums, such as: excessive sleep, social withdrawal, weight-loss and melancholic depression. It’s like no other therapy light! Proven to be effective in elevating mood, increasing energy and restoring one’s inner body clock. Made from all metal and U.V. shielded Extremely portable unit only weighs 7 lbs! . Size: 17½” x 9½” x 3¼” . Made in the USA.