Introduced in the early 2000s, RAB Design's 4 in standard round DVXJ aluminum box is ideal for a range of indoor/outdoor commercial and industrial applications. Sandblasted aluminum finish is standard Product includes stamped aluminum cover 4 in standard cast aluminum box with 5 threaded entries Each unit has two opposing mounting feet, 4 internal posts for mounting covers and 2 additional posts for universal cross bars All posts 10-24 tapped