Thanks, Kurt. The product is McMaster Carr part number 8429A3 - just checked and still in the online catalog. You got the bend issue right on. I used several layers of thin aluminum strips that fit very snugly into the channels. I marked the bend location and clamped a piece of rounded 2X4 in the vice and bent it over that by hand - repeatedly checking progress against the door frame. You can see by the picture that I trimmed each end to fit over the door frame tubing.