Anyone know of a Coin World or Lighthouse type slab coin holder for large coins/medals

I'm looking for something to hold Bryan money, and no one outside of the grading companies appears to have holders larger than about 40 mm.
"It's far easier to fight for principles, than to live up to them." Adlai Stevenson
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Air tites are made in most any size.
If you have trouble figuring it out from the website it's easier to call them.