I just picked up a used over/under Happ's coin door while I was at the arcade parts store
http://www.happcontrols.com/coindoors/40003800.htm.
Wasn't sure if it would fit in my cabinet (UAII design), but the price was right, so I bought it. Unfortunately, with my luck, it doesn't fit. I have 18" to work with, and this is 21" tall.
This door is in excellent condition, except that it is missing a lock on the bottom door. I'll post a picture this weekend when I find my digital camera.
Does anyone have a smaller door they would be willing to trade for this? Either a wide one or a single one without the coin box?
Or, does anyone have a frame assembly for a single happ's door that they'd be willing to sell? I suppose I could just use the top half of this. Peale, is this the kind of thing you have kicking around?
If all else fails, I'm willing to sell. Let me know if you're interested.