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360 Siphon RV Vent Cap review

Truly eliminates odors from RV tanks
  • Editor Rating

  • Rated 4.5 stars
$29.95 to $37.80
  • 90%


Dealing with emptying RV holding tanks is no fun at all and no one wants to smell those gases on a daily basis. Traditional vent caps are unable to create the vacuum that the 360 Siphon RV holding tank vent cap can to suck out odors.

This vacuum helps eliminates odors from the source so they don’t invade your living space. The updraft that is created leads to an oxygen rich atmosphere, breaking down waste at a faster rate. You’ll be able to take a deep breath of fresh air when using the Siphon 360.


  • Gases are drawn outside leaving the RV living space smelling fresh
  • Creates an air vacuum
  • Eliminates odor from the holding tanks
  • Creates an oxygen-rich environment that speeds up waste breakdown
  • Contains built-in bug screen
  • Works in any wind condition
  • Made of strong polycarbonate material
  • Easy instal
  • Universal fit
  • Comes in both white and black
  • Made in America


  • More expensive than standard vent cap
  • Will need other supplies such as caulk gun and caulk

About Jen Holt

Jen Holt and her husband Drew are parents to two young kids and travel the country in their fifth wheel nicknamed Big Moosey. The Holts have a passion for the outdoors and love visiting National Parks. You can follow more about the Holts adventures at

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