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Roof Vents to Nowhere?
On the roof of my Voltage 3305, I have 4 round vents. 2 of them are vent stacks. One for the rear grey tank, and one feeding from both the front grey and black tank. These are each being fed from 1.5 black PVC and the roof top caps are approximate 4" round, held on with a single screw.
Then there are two additional vents that are about 6" round and unscrew by hand to reveal a screen of sorts but no obvious pipe below. And when I spot their locations from inside the trailer, it doesn't seem like they could go anywhere other than into the ceiling cavity. Are these some sort of fresh air exchange to keep fresh air circulating in the ceiling space? I wonder how much cold air gets into the trailer through the ceiling with those open to the outside.
I welcome your thoughts. 🤘🏼
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2016 Voltage 3305
2002 F350 SRW 7.3L Turbo Diesel
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