18 Gallon Plastic Marine Water or Waste Holding Tank

Manufacturer Part
Polyethylene rectangular marine holding tanks retain less odors than aluminum or stainless steel tanks. FDA approved. It should always be stored avoiding direct sunlight and protected from freezing. It has UV inhibitors.

Accuracy of the images may vary. Refer to the specifications table to ensure precision.

18 Gallon Boat Holding Tank - Septic & Waste

 RH-B159, 18 gallon marine holding tanks can be used for marine toilet (head) holding tanks, freshwater, greywater and blackwater situations.

  • Polyethylene tanks generally retain less odors than aluminum or stainless steel tanks.
  • Rotomolded using FDA approved polyethylene plastic resin.
  • Tank dimensions can be rotated to meet your needs.
  • Marine Holding Tanks can be ordered 3 different ways to fit your needs: a Standard Holding Tank Fitting Package, a blank tank with no fittings installed, or a custom tank with fittings installed per your request (Any Location, Any Size)
  • Standard Holding Tank Fitting Package includes: a 1 1/2" Inlet, a 1 1/2" Outlet, and a 1/2" Vent
Technical Drawings
Fitting Dwg

Key Specs
Gallon Capacity 18
Lid Size 5"
Length 20"
Width 17"
Height 13"
Weight 20lbs
Material Polyethylene
Manufacturer Ronco Plastics
Manufacturer Part Number B159
Warranty 3 years years
Disclaimers Any modification to the fittings installed on this tank will result in additional cost.
Shipping Height 13"
Shipping Length 21"
Shipping Weight 20lbs
Shipping Width 17"
Ship Class UPS