Helping parents downsize and came across this in the garage. Not my field of expertise so please feel free to reach out if you see an error in my description or summary.

I went through each box and looked for matching sets of the covers and the mounting plates. Doesn’t quite map out.

- 518 - Adjustable external elbow - 12 covers and 7 mounting plates

- 506 - connection covers - 24

- 517 - Adjustable Internal Elbow - 7 covers and 6 mounting plates

- 511 - 90 degree flat elbow - 8 covers and 9 mounting plates (one of which was used)

- 5785 - Combination Connector - 3 covers and 3 mounting plates

- Plus some extra pieces. Not the larger box does look like it was used but all of the rest seem new to me.

Please let me know if you need any additional information or pictures.

Thanks for looking!