Width with or without the Zorro connector?
Total length, total width. So yes, with connector/s on any end.
A bit more info which maybe I should've stated at the start...
It'd be good to get an fairly accurate measurement as I have plans for a project (of course I won't know 'til I have a specific card here to check with). The project is basically an accelerator card (040 or 060) inside my Amiga 1000 Phoenix, or, where I think there is more room, in my newly acquired A500.

If it goes in the A1000 Phoenix, I was actually thinking of utilitising the Zorro II slot to adapt to the accelerator card - of course there may be some physical changes - and this is what I'm trying to work out. From net searching info about Zorro II pinouts, it seems VERY closely electrically identical to the A2000 CPU slot. So, I'm thinking it can't be too hard to adapt or if not, strangely enough, a "plug in" solution! Has anyone tried an A2000 CPU card in a spare Zorro II slot to see if it works?
As a positive, I seem to remember hearing of a few people who have adapted A2000 CPU cards to the A500 Zorro connector as well.
So basically, I really do think it'll be fairly doable without too much hassle!