"Unfortunately, after I (and my engineer friend and my husband) attempted to assemble the Wire Works Group Folder Set BL/GR/RE/YE @ $ 7.99 #163663BL, 163663GR, 163663RE, 163663YE and were unable to do so. I am returning them. It has been a busy week with Thanksgiving guest from Texas and parent teacher conferences at school so I am hoping this can be quickly resolved. My husband will try to box them this week and return them for a full refund. Do I need any special return label or other refund documentation? Honestly, I don't know who designed them but assembly was impossible for all of us who attempted that task."