Does anyone know where I can obtain information on these models of lights. I've googled them up, but can't find much. They appear to be older lights, so they may be out of business.

I got a set of these fixtures for $20.00 a piece (10 fixtures in all, no bulbs), but want to know what barn doors are available. Also can these lights be successfully lamped down?

Would I be better to sell them on ebay and buy newer fixtures? If so, how much would these lights go for? They need a little paint and clean up. There are currently none like mine on ebay, or I would just compare them.

Model 520- P28s base, Model 570-P40s base

thanks,

Mike Watkins