like Rondo, my 2005 2955RL has a grilled vent just above the basement (where the batteries are located) door on the drivers side. There should be tubes from the battery box to the vent. The purpose is to get the hydrogen gasses to the outside where there is less of a chance of an electrical spark igniting them. It also gets the corrosive gases away from things that you care about (wiring, hydraulic pump, etc.)
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Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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