Audio /dvd support column system (avrshelf001), the tvshelfoo1 column system is the easy way to hide and guide cables at any height. \n\nthe column system features our flexible and unique, giving you the freedom to easily hide and guide cables at any height. you can place up to 3 in the column system. column depth: (mm /inch) 39 /1.54 \ncolumn height: (mm /inch) 641 /25.26 column width: (mm /inch) 99/3.9.\n