The nbig box stores have a splash guard that attaches to the stall wall and top of the base. I have seen 2 different sizes. One is about 10-12" yall ans the other is about 24" tall. I put the 24" in our2104 and haven't had any problems since.
BTW it attaches with an adheasive tape which can be removed.
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2012 F250 6.2 gasser 373 rear
2013 Rockwood 2104S Mini Lite
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