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Old 11-13-2009, 10:01 AM   #1
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1977 21' Globetrotter
Davis , California
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Identity of small floor duct

This is a photo of a small, about 1 1/2" piece of grey ducting that extends from below the floor (near the axle below, and water heater) into the space under the side gaucho in my '77 21' Globetrotter. Discovered after removing the gaucho as part of a renovation project. I cannot see any means of connection to the furnace, located on the opposite side of the trailer (furnace has been removed for replacement). Help identifying its purpose and origin/destination would be appreciated, as the service manual doesn't seem to provide any info.

Maybe it's just a crawlspace for rodents!
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Old 11-13-2009, 02:15 PM   #2
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Malakoff , Texas
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That hole in the floor looks like it was cut after
it left the factory...but I am not sure.
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Old 11-13-2009, 05:40 PM   #3
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Madison , Mississippi
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Heater duct for water and waste tanks
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Old 11-13-2009, 10:28 PM   #4
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It's almost certainly a duct for the holding tank warmer. If if it is not that, the only other thing it could be is a duct for the bathroom vent, but it is in the wrong location for that.
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Old 11-14-2009, 02:55 AM   #5
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OK, OK, now I get it! Show us all the REST of the elephant you've got helping you with that renovation...
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Old 11-15-2009, 07:53 PM   #6
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1977 21' Globetrotter
Davis , California
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Thanks to all of you for your input. I think I'm dealing with a duct system modified by the PO. I believe the cutout for the refrigerator ventilation was enlarged (it's about 6X9 in. now) and adjacent ductwork that feeds across the trailer removed at that time.
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