Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Heavy construction, no screws!

These rack ears by Raxxess are extremely heavy duty. That's not all good news if you have to carry your rack around, because you'll be cursing the extra weight. If you buy these for a Mackie 1402VLZ3, as I did, you better plan to spend some extra time and money finding and purchasing at least four screws and/or hardware to replace the chassis screws on the VLZ3 for mounting these brackets, as the existing screws won't even reach the threads through the thick metal of these rack ears. To me, the failure of Raxxess to provide necessary hardware to make the ears work out of the box is horrible customer service and support for the product. It appears when I'm done, the system will work in a standard 19" rack (unlike the other reviewer's comment), but I'm off to find the hardware, cuz' I can't install the VLZ3 in my rack until I do.