Flat tops, square sides, and true corners mean the cases stack and line up flush — a wall of sealed product that reads like an archive, not a pile. 5 mm walls keep the weight sane at shelf scale.
Shrink-wrap protects the seal, not the box — it lets through sunlight, dust settles on it, and every handling leaves a mark. The case takes all of that instead, and the magnetic lid means checking in on it never risks it.
Every figure below is measured, not marketed. If a number matters to you and isn't here, ask us — we like collectors who check.