One thing I’ve noticed with these Rockville speakers, is the dust caps aren’t oriented with the bolt pattern. Minor complaint, but if you want the lettering level, pay attention! I also had planned to use “T” nuts and machine screws to retain the speakers in the box and the trimmrings will also hold them in. Some of my bracing interferes with the T nuts. I’ll get at least 4 T nuts per speaker, screws for the rest. The trim rings would hold them on their own, just hoped to get them all in.