I measured the channel of the machine to be ~24 in. I did not check the height, as it was not of my concern at that point, but from memory the height-to-width ratio was certainly better than 1:2, so you should be OK. The height of my Brompton's outline is actually something like 12 in. To be on the safe, I'll measure the height of the machine's exit channel on the occasion coming next week.