Over a queen?
I've never heard of one like that. I've only ever heard of twin over full.
Pretty common in resort areas to find them in rental homes. The house I rented in Duck (Outer Banks) last summer had one, the one we're renting this year has at least one...which is why its making me crazy.
Like Marnoot said, drop the XL.
I googled "extra long bunk bed" and came up with a bunch of results.
Also, try calling a local cabinet maker or framer. It might be more cost effective to have a custom frame made to your matresses. Or even make your own. Quaker-style is pretty easy and can be accomplished with lumber and fittings from any Big Box Home Center.
Brad
Surfing through results that way now, good tip.
I don't make *expletive deleted*it myself...well...you know what I mean. I've got two left thumbs, and anything more complicated than pre-assembled furniture can be daunting for me.
Twin over queen bunkbed sounds like an excuse for the kids to repeatedly jump from the upper to the lower.
Yeah I know....but we need a little extra sleeping accomodations for guests.