Is there a particular reason why most prison doors’ bars are vertical?

Question

I would assume horizontal bars would make it stronger because they will have to be shorter (assuming normal door proportions)

EDIT: I mean cell doors

EDIT 2: Ok so its a combo of reasons like making it harder to punch thru the bars, exchange goods, use weight to bend the bars, and no climbing to prevent WWE scenarios. Aight thanks guys

In: Other

Answer 1

From a construction perspective, if you’re fencing off a large opening with bars installing multiple, shorter vertical sections is easier than levelling long horizontal bars.

You’ll also have to put many vertical posts to prevent the horizontal bars from sagging or worse, being deformable enough in order to let a person squeeze through. ( You can see how soft steel can be when you deal with 6m sections often.)