Single Roller Wheel Assembly

The doors are from about 1980 or so. The length measures 5 inches wide. The bars are about 3/4 of an inch wide. The nylon wheel size 1-11/16. I can get just the wheel but looking for the entire part. It's made of aluminum. The extra part is what makes the assembly go up and down with a screw. The doors are from about 1979-1982 or so. I looked for the part on your website but did not see one that looked similar. Thanks! Dale