Aluminum arms cradle the 31 1/2" diameter x 2 13/16" depth spun steel housing (Total dimensions are 39" diameter x 7 7/8" depth)The Indirect fixture includes a 12 1/2" reveal (open center) with a suspended ring below the housing to create a soft luminance from three or six 39-, 40-, 50-, or 55- watt long compact fluoresecent lamps. The Indirect/Direct fixture adds soft down-lighting with gradients of light through an assembly of acrylic diffusers in six horizontal layers and three or six 39-, 40-, 50-, or 55- watt long compact fluorescent lamps for the indirect portion and one 21- or 38-watt 2D lamp for the downlight component. Both fixtures include a “highlight edge around the entire upper periphery for a perception of added brightness in the space A truly unique look with the addition of decorative and supportive, aluminum crossing arms.