360 Siphon RV Fume Extractor - Black Creates an updraft that totally eliminates odors and gasses in the RV living space Breaks down waste 3 to 4 times faster and more completely than caustic chemicals Virtually guarantees a constant, oxygen rich environment for healthier living Can be installed within twenty minutes using a screwdriver and putty knife Permanent, one-time, maintenance free application with no moving parts to wear out and works in any wind condition