Our search for a companion to our vastly popular Space Rover was quite a journey. When we asked artists what they needed, they combined the need for open access to paper and boards with efficiency and a way to move supplies about at the same time. They also wanted to be able to safely remove the last board or sheet without damaging it, and wanted to be able to hold printmaking and watercolor sheets with deckle edges 22x30" in size and have a safe margin for error when placing them inside. We didn't stop making our models until they were totally satisfied and all their wishes came true. We think you'll agree this is one handy unit! Simple assembly required.