i would surmise they are off the shelf parts
try an OTR truck center,
there may even be a brand name or number on your bags, and they could source you a new one, firestone is just one of many that make them
ask your rv dealer to get the part number and see if it crosses to another vendor
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USN Retired, Life time member of the DAV.
Enjoying the 2008 Damon Tuscany 4056, #3998 no your eyes are fine, there are really 6 slides
2022 F150 King Ranch or 2012 Edge toads
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