custom made i am sure you can get anything made all about how much cash you have
i ordered the clear 1/4 mesh top kit from bulk reef supply and it looks awesome on my rimless tank. It doesnt take away from the look at all. in fact I think it looks even better.
Rimless with the larger tanks will always be difficult and some manufacturers won't even do it. Just remember that when you go rimless you're compromising some of the support at the top and that needs to be made up with thicker glass (significantly more weight) giving the seams more surface area. It would also be much more expensive than a standard tank of the same size. Just some things to consider.
Get it euro braced.. That's what i have, then screen on top
You won't get a standard 220 size made rimless without eurobracing. And once you get eurobracing it looks a little meh. You will find a 220 thats 36 deep though thats rimless. The length of the front pane of glass on the standard 220 needs to be very overbuilt for it to work, bumping the glass to 3/4".
meh = ehh/whatever/pshhh same lines..
But... whatever the case may be.. Glass rimless would be insanely heavy and extremely thick in order to support the weight and pressure. Acrylic would probably be the better bet, however I would not attempt either without any bracing. JMO.
large acrylic tanks have to have a complete top built into it to hold it together. i have a 150 acrylic with top i wouldn't recommend it