I was looking at ebay and I saw some people sell what they call Screen Printing Exposure Unit or Light Table. For example this one: 140353250255 (that's ebay's item id, just copy and paste to ebay's search).
From the description and picture, that is basically a box with 8 UV 15 watts unfiltered tubes.
Anyone used one of these for alt. process printing? it seems to be slightly more economical (and well made) compared to those dedicated UV light boxes for alt. process.