RVShop.com Market Share Analysis for June 2026

360 Siphon Odor Eliminator Sewer Vent Black Gen 2, 389380 New Design: Generation 2 has a 15-18% higher draw rate than the Gen 1. The Gen 1 was wider and taller and had a dome shaped top. Top measures 4 1/2". Attributes Compatibility: OEM Color: Black Material: Polycarbonate Includes Cap: Yes Includes Putty Tape: No Includes Mounting Hardware: No Product Description The 360 Siphon ® RV holding tank vent cap remove odors from the source the holding tanks and exhausts them out the roof vent before they have a chance to invade the RV living space. By design, the patented 360 Siphon can only create an updraft, expelling odors and fostering an oxygen-rich environment to speed up waste breakdown. Even environmentally-friendly tank additives can take up to 48 Hours after use to fully oxygenate a standard holding tank. The 360 Siphon acts immediately after installation in any wind condition (with or without a breeze) to provide the ideal environment for proper decomposition, so caustic chemicals and perfumed cover-ups are no longer needed. Features & Benefits Prevents Odors And Gasses From Invading RV Living Space Speeds Up Waste Breakdown, Eliminating The Need For Chemicals Sophisticated, Patented Design With No Moving Parts Works In Any Wind Condition Built-In Bug Screen No Maintenance Easy Installation And Universal Fit