Storage Box for under 8in Cross Bin

So, just received my 8in cross bin from Diamondback. Previously, I had a few Plano boxes to carry misc. crap, so the cross bin is perfect for my quick access items.

What I'd like to do now, is maximize the space under the bin, and get a case/container that will fit underneath. Purpose would be for items I dont need to access quickly or regularly.
Problem is the size. I've got barely 11in of clearance from the bottom of the bin, to the top of the bedmat, and maybe 40 inches of width between the wheel wells.

I've looked at Pelican, Pelican's Storm, cargo and air. Also Plano, and a few other no-names. I cant seem to find that sweet spot for a case that will fit perfectly. Either they are too short, too tall, or so small it's not worth buying.

Looking for anyone that has had success with this, and found something that works.

 

This one is looking like a winner so far. Not as long as I'd like, but it should barely, barely fit under the cross bin.

$360 Pelican Air 1615 Case No Foam, Black, 1 Unit

https://www.amazon.com/gp/product/B08C9VYQLH?smid=A38Y5L1QXGSHH8

 

Just in case someone is ever in the same boat, I ended up going with two Clevermade 32L collapsible bins. The Pelican was about an inch too high. The Clevermades fit perfectly under the cross bin.