I think what the gal above was referring to would be something like a desk accessory where you would put file folders upright on a metal riser. They can be elevated from front to back so that they would sit directly on the table, but the rear would be elevated by a few inches. It's hard to describe, but it's like a "waterfall" type of thing where the back is a bit higher than the front.
If you look at desktop file folder holders, you'll see what she's talking about. They're not especially expensive, and I agree, that might work. You could put several of them on your table and as long as you put the same size frames into each compartment, they would look pretty nice. And everything would show. So you could use one for 5 x 7 frames and one for 5 x 8 frames, etc. (Or whatever size you have.)
Hope this clears it up a little bit. I'm not really good at this (LOL LOL) I was only a legal secretary for years and had to use these dratted things all over my own desk all the time. I can't remember exactly what they're called, but desk accessories, and file folder holders would pretty much describe them. They come either solid metal or you can also find them made from very hefty metal, but it's a frame. I can envision that working for your frames.
To see what I'm talking about, just Google office supplies or Staples or Office Depot, something like that. Then search for desktop file folder holders. I'm sure you're gonna see what I'm talking about.
