I used the solid foam but think the tubing is a better choice. The foam can break while you are trying to snake it through and after a time it becomes "smashed" flat. I'm not convinced that it is working quite as good as it did when I first put it in but it still works. Sometimes I think I can here more noise than I did 6 months ago. Might just be me. I did it over a year ago.
its just 3/8" Vinyl Tubing. pull the door seals off, fish something threw the seals(small fish tape will work), then if you drill a small hole in the end of the tube you can tied a small string to the hose and to what ever you fished threw your seal, lube the vinyl with soap or a white lithium grease and pull it threw.. repeat for all others..
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