Oh boy do I have something to add to this thread.
I've been using cVaults for around two years. I have five of them. Three 4Liter, and two 8Liter. If you dry your harvest carefully and jar as near to 60% as you can, the Boveda packs can and do last... and last, and last. I have several in vaults over a yr old.
It looks like the largest one you have there might be the 4L. They also make 8L and a jumbo 17L that I know of.
Here is a photo of one of my 4L with 227g DDA in it.
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And some of an 8L with 365g Autoultimate.
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There are also new and old type closures. The old type just closed it and sealed the lid. The new style has an indention where you can encircle the entire vault and lock it with a security strap.
Old style.
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New style.
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Notice the cut away on the latch for the locking strap.
They are a little pricey, but my favorite way to store my stash. You ever drop a mason jar full of weed and have it break? Nuff said.