I believe it to be ECS 7000 series 4U case. Good used condition with shock mounts still attached, but most of them have the racks removed.
Please see pics for measurements. I have several of these cases as well as over 300 other retired military cases for sale. Some are listed already, as I work on getting others listed as well. Please message any questions and check out my other listings. The item "6 ECS Rackmount case 7000 4U Rack Electronics server shipping transport mixer" is in sale since Wednesday, March 27, 2019.
This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Cases, Racks & Bags".com)" and is located in Plover, Wisconsin. This item can be shipped to United States.