3U/4U Rackmount Chassis Recommendations?

Anyone know where I can pick up a chassis like this? Doesn't need to have anything inside. Used is fine, ideally a Supermicro with 10x3.5" bays. Thanks in advance.

I was scrolling through some hardware listings earlier—you know how it goes, just falling down a rabbit hole of parts you probably don't need—and I stumbled onto this
thing. It’s one of those deep dives where you start looking at a single component and suddenly an hour has vanished into thin air.