Boat Vent Filters for Holding Tanks

MHTV Boat Vent Holding Tank Vent Carbon Filters

Eliminate awful toilet odors from your cabins.
MHTV-100 Single Size ships with multiple size adaptors:  
5/8“ (16mm), 3/4“ (19mm), 1“ (25mm), 1-1/2" (38mm)

MHTV-100 Eliminates Odor

MHTV-100 vent filters are connected to the vent line leaving your boats toilet waste holding tank. Before any air can travel from your holding tank to the vent, it must first pass through the filter. 

MHTV-100 works by passing the vent line air through a filter comprised of activated carbon pellets before it escapes. Activated carbon is a special type of highly porous carbon. The effective surface area of just one gram of Alpha-Pure carbon is over 500 square meters!

The actual toilet odor that comes from your holding tank is made up of tiny particles of various types. Since the holes in the activated carbon pellets inside of the MHTV-100 are so small, the odor particles are trapped as they pass through the filter. 

The MHTV-100 has 90% more activated carbon than any other similar product. Our proprietary “SNOWSTORM” media-filling process vastly improves performance over any other unit sold today.


  • MHTV-100 Single Size ships with multiple size adaptors 5/8“ (16mm), 3/4“ (19mm), 1“ (25mm), 1-1/2" (38mm)
  • 90% more Activated Carbon Media
  • Lightweight and compact design
  • Easy installation, easy maintenance

Installation and Replacement:

  1. It is easy to replace and install.
  2. We advise replacing the filter at the beginning of the boating season.
  3. It is advised to not wait for the Holding Tank to become overfilled. This will allow the Vent System to perform. 

Marine Holding Tank Vent Filter Eliminates Toilet Odors from Boats


$49.95 sku : Boat / Marine Holding Tank Vent Filter (with 5/8, 3/4, 1, 1.5 adaptors)