Good morning, I was comparing the 2 different model #s. 84-036 which the plastic mount is 1/2" width. Compare to 84-007 with mount is 3/8" width. My wheel is 1 1/8" diameter and wheel is 1/4" width and concave is 3/16" width, mounting plastic to frame is 1/2". There are no markings on door or hardware or sliding screen door. The are 2 wheels on bottom and 2 wheels on top. Door approximately 40 years. Any suggestions please. Thank you Marc
Thanks again
