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711-M28 Marine Sanitation System


In stock online.
Model # 374074 | Mfg # 312371103

Product Description

Complete freshwater sanitation system in one self-contained and compact package. This toilet's freshwater operation eliminates the unpleasant odors associated with saltwater systems. An integral vacuum breaker protects your potable water supply. Efficient operation uses only about a pint of fresh water per flush and requires no electricity. The water level and flushing action is controlled by a single pedal. TeflonĀ® seal keeps tank odors from escaping. 9.5gal. capacity.

  • Type: Self-contained manual
  • Material: China bowl/polyethylene tank
  • Port Sizes: 1/2" (13mm) male NPT inlet, 1-1/2" discharge, 5/8" vent
  • Dimensions: 20"H x 18-7/8"W x 18-3/4"D
  • Warranty: One year


711-M28 Marine Sanitation System

Capacity 9 1/2 Gallons
Diameter 1/2" Inlet
1 1/2" Discharge
5/8" Vent
Color Beige
Dimensions 20 5/8" Height x 18 7/8" Width x 19 1/4" Depth
Size Standard
Material China Bowl
Type Self Contained Manual
Warranty Details Two Years


by PowerReviews
Sealand 711-M28 Marine Sanitation System

(based on 3 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.

Reviewed by 3 customers

Displaying reviews 1-3

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(5 of 7 customers found this review helpful)


Much more like a home toilet! Love it!

By Destination anywhere

from Smith Mountain Lake, VA

About Me Advanced

Verified Buyer

Comments about Sealand 711-M28 Marine Sanitation System:

We replaced an original toilet and are very pleased with this one. Ollks so much better than the old one.

(7 of 9 customers found this review helpful)


great for small boat

By steve

from ocean city md

About Me Professional


  • Compact
  • Easy to use
  • Installs Easily
  • Quiet
  • Water Efficient


  • Have to empty frequently
  • Not for multiple people
  • Small holding tank

Best Uses

  • Low Usage
  • Small Boat

Comments about Sealand 711-M28 Marine Sanitation System:

not for use on charter boat or high usage. fills up too quick with multiple people. Great for small boat with occasional usage

(5 of 8 customers found this review helpful)


Very happy overall!!!!

By Gail

from Peoria AZ.

About Me Casual/ Recreational

Verified Buyer


  • Corrosion Resistant
  • Installs Easily
  • Practical
  • Quiet
  • Water Efficient
  • Works Great-easy install


    Best Uses

    • Large Boat

    Comments about Sealand 711-M28 Marine Sanitation System:

    [...] Very happy with [...] the head itself.

    Displaying reviews 1-3

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    1 (800) 262-8464