Montana Owners Club - Keystone Montana 5th Wheel Forum

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triplehorn 06-24-2017 11:16 PM

Rooftop vents
I decided to order 360 siphon vent caps. I have a black, and two gray tanks so right I ordered 3. Much to my surprise I got up on the roof to install them and there are 4! Maybe one is for the washer drain to vent? (my best guess)

MARK A 06-25-2017 03:40 PM

There are "attic vents" up there as well that look the same except my attic ones are white.


1retired06 06-25-2017 03:57 PM

Attic vents are normally the mushroom vents, larger. One in front, one in back.

BB_TX 06-25-2017 04:39 PM

My attic vents are much larger diameter than my waste tank vents. All are white.

triplehorn 06-25-2017 06:45 PM

I have 2 mushroom vents, one in front a rear center. There are 4 other vents. They are all the cap style for tank vents. One is positioned about where the washer drain is. I think it may be a vent for the washer drain. Maybe someone knows for sure.

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