Missing foam??
Lots of factories use expanding foam. The frame is upside down so it was easy to apply. You can get a can of foam, turn the can upside down and just hold the nozzle tube up. Apply a small amount and let it stick before adding more.
Capped lines are most likely the low point drains for the fresh water system.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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