If installed, you can increase visibility and add 8-12 inches of usable space in your cabin area. The Spacedoor™ allows you to have a variety of possible interior configurations to meet your needs — whatever they are. This is a great accessory for multi-mission aircraft. Designed to replace the standard OEM sliding door, the Spacedoor™ utilizes a lightweight composite technology. It’s easy to install and does not create additional operating limitations. Here’s another bonus: The Spacedoor™ comes with one of our other products, the Cabin Door Roller Kit, which makes opening and closing the door a breeze.