what do you mean with locks flight approved, they need to be sure that they can unlock your case?
Anyway I found this one but the seller don't delivers goods in UK, the same product in UK costs something like 138£ (216Usd more or less)!!!
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the other one even though I guess to have done a mistake with the size, we'll see...
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that are just 24 gallons....
anyway there's still the big brother just in case I'll need more space with 50 gallons of capacity avalaible on the same website.