Dometic Holding Tank Vent Filter – 309311004

Eliminate unpleasant holding tank odors with the Dometic Holding Tank Vent Filter (309311004), a highly effective and eco-friendly solution designed for marine sanitation systems. This advanced vent filter uses activated carbon media to absorb and neutralize odors before they escape through the vent system, keeping onboard and surrounding air clean and fresh.

The innovative concave filter design ensures that all vented gases pass through the filtration media, maximizing odor removal efficiency. This eliminates the need for harsh chemicals, making it a safer and more environmentally responsible choice for odor control. 

Designed as a universal replacement, this filter fits all Dometic DVF and legacy SeaLand vent filter systems, replacing multiple older part numbers for simplified compatibility.  The complete kit includes multiple hose adapters (5/8", 3/4", 1", and 1-1/2"), allowing easy installation across a wide range of setups. 

Built with recyclable materials and 55% less plastic than previous models, this updated EcoVent design delivers strong performance while reducing environmental impact. 

For optimal performance, periodic replacement is recommended, especially if the filter becomes saturated or exposed to overfilled tanks.

Key Features & Performance

• Effective Odor Control: Uses a specialized concave shape and activated charcoal media to ensure all malodorous gases pass through the filter before venting outside the boat.

• Universal Fitting Kit: The complete kit includes a mounting bracket and a set of hose adapters that fit the four most common vent hose sizes: 5/8", 3/4", 1", and 1-1/2" ID.

• ECO-Friendly Design: This updated model uses 55% less plastic than older SeaLand/Dometic cartridges and features recyclable components.

• Easy Maintenance: Designed as a "drop-in" replacement, it fits into the same footprint and brackets as previous SeaLand Saniguard filters for a fast swap.

• Chemical-Free: By neutralizing odors at the vent, it often reduces or eliminates the need for holding tank treatment chemicals.

In the Box

• (1) Dometic ECO Vent Filter Cartridge

• (1) Mounting Bracket with Hardware

• (2) Universal Stepped Hose Adapters

• (2) Threaded Adapters

• (1) Installation Manual

Specifications

• Brand: Dometic

• Part Number: 309311004

• Type: Holding tank vent filter kit

• Media: Activated carbon odor-absorbing material

• Hose Compatibility: 5/8", 3/4", 1", 1-1/2"

• Dimensions: Approx. 15" x 2.5" x 2.5" 

• Application: Marine sanitation and waste systems

Keep your vessel smelling clean and fresh with the Dometic 309311004 Vent Filter, delivering reliable odor control, easy installation, and environmentally conscious performance.

Installation Tip: To maximize the life of the charcoal media, never install the filter below the top of the holding tank. It should be mounted as high as possible to prevent liquid waste or overflow from saturating the filter, which would render it ineffective.

Manufacturer : Dometic
Manufacturer Part No : 309311004
UPC : 713814211875