I believe in your model the furnace is under the refer and that vent there is the cold air return. You should be able to block off the area under the steps with no consequence.
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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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