Rust bucket, what we usually do is to give the dimensions of the channel we want the w/s for to Metro Molded Rubber Products in Minneapolis and they invariably have something with the right dimension in stock. They aren't a stocker and re-seller like many suppliers, they actually have the dies and extrude their own. I think Steele might also but the others all come in Taiwan packages. Metros catalog has actual size cross section pics that can put you real close. Will get their ph.# tomorrow if my brain doesn't go dead the minute I walk through the door.