Sun-Mar Corp Non-Electric Self-Contained Composting Toilet

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Sun-Mar Corp

Non-Electric Self-Contained Composting Toilet


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* Estimated stock levels as of Mon, Aug 2, 2021. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availablity of items marked as Limited Stock.


The success of the Excel design meant that a three chamber unit could be specifically designed for those with NO continuous 110 volt supply. First launched in 1981, the Excel NE has long been the standard toilet for those living off the grid. A 1998 redesign gave the unit a rounded look, and recessed the drum handle.

The Excel NE has no fan or heater. Odorless operation is achieved by a 4 in vent mounted at the top rear of the unit which acts like a chimney on a wood stove. For good air movement the vent should be installed vertically and to 2-3 ft above the peak of the roof.

The optional 12 Volt Fan should be installed if you need to install the toilet with any bends in the vent. No more than 2 45° bends are encouraged, even with the fan.
If the Excel NE is used residentially or heavily, or is in a place which is subject to downdraft, the optional 12 volt fan should be installed in the vent stack. This fan draws 1.4 watts and can be powered by a solar panel and 12 volt marine battery.

Evaporating capacity on the Excel NE is variable, so the 1 in drain at the rear should be connected to an approved drain pit, container, or other facility. Please click here for more information on handling excess liquid.



Capacity - Continuous 2 adults or families of 3
Capacity - Seasonal 5 adults or families of 7
Color White
Type Composting Toilet
Vent Pipe 4 in PVC Thinwall


Unit Dimensions 31 1/2 in by 32 1/2 in by 33 1/2 in

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