The Aberdeen Series Return is non-handed. It is not free-standing, and requires connection to a credenza, desk, or extended corner. The mouse hole in the modesty panel is for cable pass through. The modesty panel is flush. There is one grommet in the surface, standard. It has a 1 5/8" thick work surface. The full-height, vertical grain modesty panel is included. This product ships in approximately 3 days