4U effector rack. I used it for a guitar rack effector for several years. There are signs of use and age-related deterioration on the aluminum parts and mounting parts, so please check the photos. Weight is approximately 6 kg. *Regarding shipping, as this is a transport rack, it will be wrapped in plastic wrap to prevent direct application of shipping labels and for scratch protection. *Please note that it will not be shipped in a cardboard box or similar packaging. Thank you.