says 110 - but unless you enclose it, there's nothing you're going to print that's likely to need anything above 60 - that's all I had it on for petg.
But remember I'm using printbite.
I'm well known to be anti-abs on 3d printers, so I'm not even going to bother testing it on alexa. Hate the smell and the reliance on acetone and the fact that in an unenclosed printer it's just weak and crap anyway.

I've looked up the aluminium extrusion.
Realistically 1metre struts are as tall as it would be sensible to go with a 1.75mm feed system.
It currently has 680mm legs, so with the bit you lose for the heatbed the extra 320mm would take her to a total of 590mm printable height.
I'm in no hurry. Currently got zero need for printing anything that tall.
It's just interesting to work out how to do it :-)