Media Holder Innovative design of fine extruded aluminum, this media holder from Doug Mockett has nine curved slots to hold zip discs and CD-Roms. It can lay on a desk or hang on a wall with the included mounting brackets. Two sizes are available ? the smaller 15 1/2 in. long unit will hold up to 27 CD-Roms and the larger 27 1/2 in. unit will hold up to 45.