WEIGHTED FLOOR STAND is 36" tall and has a 16" diameter, 20 pound weighted round base. ROLLER FLOOR STAND is 36" tall and has casters for easy portability. The legs are weighted to keep it upright no matter how the lamp is positioned. RECTANGULAR LAMP BASE weights 10-pound allowing the lamp to be placed on any horizontal surface free from the restriction of table edges. WALL MOUNTING BRACKET can be screwed to any vertical surface, thus allowing the lamp to be free of working surfaces. TABLE MOUNTING BRACKET can be screwed to any horizontal working surface free from the restriction of table edges.