This is a black Grundorf Carpet Series heavy duty mixer case is great condition. I used it to protect my Presonus StudioLive SL1642 mixer. I measured the outside dimensions of this case at 29" x 26.5" x 10.5". Since I bought it used, I do not know the exact model, but based on the outside dimensions, and reviewing the Grundorf product page for the Carpet Series, I believe this to be the M-SOCSIPERF2 designed for the Soundcraft Si Performer 2 mixer, which would have inside dimensions of 28.75" x 21.2" x 6.7". As you can see in the photos, I made my own custom form-fit foam to perfectly fit my SL1642, and I can do the same for your mixer or ANYTHING else for that matter.
This professional level case has multi-layer plywood construction and is glued and stapled for maximum strength. The lid and body of the case include an exclusive bevel-cut design to "lock" the cases together providing a secure, dust-proof seal. The case is finished with a durable, easy care, black carpet finish, and heavy duty, all steel hardware assuring this case will hold-up to years of road life!
This case also features a lift-off lid design and is equipped with 1" foam interior, heavy-duty ball corners, stacking ball corners, recessed catches, and spring-loaded/rubber gripped recessed handles.
Thanks for looking, and as always, please don't hesitate to contact me if you have any questions whatsoever.