This laptop housing is perfect for those looking to replace their old or damaged Mac Book case. It is designed to fit the 13" Mac Book Air model and comes in a stylish gray color. The unit type is a single unit and is compatible with the Mac brand. The housing is made to protect your laptop from scratches, bumps, and other damages that can occur during transport. It is a high-quality replacement part for your Mac Book Air and will restore the functionality of your device. This product is perfect for those who want to upgrade their laptop's appearance or replace a damaged case.