This is the option that gives you the option! With this option, your new Catbox cabinet will come featuring cat entrances on BOTH sides of the front swinging doors. This MATCHING ENTRANCE COVER will fit in EITHER side, thus enabling you to move your Catbox whenever and wherever you want while still keeping the visible side flush and covered! If you need to you can also leave BOTH entrances open... it's up to you! NOTE: THIS OPTION IS NOT AVAILABLE FOR THE "ELECTRIC" LITTERMAID MODELS.