where can I get aluminum window channel?

I am looking for a replacement piece for a 1976 WW Horse trailer. I have most of the pieces, but am short 1 or 2.

Does anyone know of a place to get it? This is the kind that holds plexiglass, and fits into a outer channel in the horse compartment of the trailer.

I will send pics tomorrow, I dropped my camera and have to get a new one.

Thanks Whitney

 

Don't know the shape you need, but you might try Royal Aluminum, South of Ft Worth. I build garden windows and buy my extrusion from them. I'll have to get you a phone # later. Or you can Google the name.