Deck box interior depths, one big chart

Here is the interior depth, in millimeters, of every deck box in our data where that number is actually documented, sorted from the tightest to the roomiest. The smallest is the Ultimate Guard Boulder 80+ at 55mm, and the largest is the Dragon Shield Double Shell at 90mm. Interior depth is the single number that tells you whether your sleeved deck will actually go in the box, and this chart puts every one we have next to each other so you're not hunting through separate product pages to compare them.

Why interior depth and not exterior size

A box's exterior dimensions tell you how much shelf space it eats. Interior depth tells you how thick a stack of cards can go inside before the lid stops closing. Those two numbers do not track together in any reliable way. A tall box can have a shallow card compartment if part of its height is a dice tray or a hinge mechanism, and a compact-looking box can have real depth if the designer built it card-first. Every measurement below is the interior number, not the box footprint.

The full chart

What jumps out reading it top to bottom

A few boxes rated for the same card count sit far apart on depth. The Ultimate Guard Boulder 100+ and the Dragon Shield Double Shell are both marketed around 100 double-sleeved cards, but one measures 68.3mm and the other 90mm, a 22mm gap for supposedly the same job. That gap is exactly why "100+" on a label isn't a spec you can shop by. Two boxes at the same depth can also come from completely different product lines, like the Boulder 100+ and the BCW Prism Deck Case both landing at 68.3mm despite being built for different price points and use cases.

How to use this chart

Measure or look up your actual sleeved stack thickness, then scan down to find the first row with enough depth to clear it comfortably, not just barely. If you're not sure what your sleeve combo adds up to, run it through the fit checker and it'll tell you directly instead of you eyeballing a table. That's the faster path if you already know your sleeve brands; this chart is for browsing what exists, the fit checker is for confirming your exact combo.

Quick answers

Why do some boxes rated for the same card count have different interior depths? Because "100+" or "80+" on packaging usually assumes the manufacturer's own house-brand sleeves, and different brands of sleeve stack to different thicknesses. The interior depth number cuts through that assumption.

Is a deeper box always the better choice? Not automatically. Extra depth past what your stack needs just means cards ride around inside the box and can wear at the corners. Matching depth closely to your actual stack, with a little slack, beats maximizing depth for its own sake.

Why isn't every deck box in our data on this chart? Plenty of boxes in our records don't have a published or measured interior depth yet. We only publish the number when we actually have it, rather than guessing at a figure to fill a row.

Twenty four boxes and a 35mm spread from top to bottom is a wider range than most people assume exists in a category that looks the same from a store shelf, and the only way to know where your deck actually lands on it is to check the depth against your own sleeves.