"For use where a conventional toilet is not an option or not cost-effective!"

"These systems are set up in minutes and operate with two chambers that separate solid and liquid waste"

Perfect for RVs, Boats, Tiny Homes, Cottages and Cabins, Boats, Farms, Warehouses, Garages, Barns, Stables, Mines, Aircraft Hangars, and Pools - the list is endless and the GTG can go anywhere it’s not possible or cost-effective to install a conventional toilet.

Compliant to the Plumbers, Gasfitters, and Drainlayers (Self-Contained Vehicles) Regulations 2023

FEATURES:

• Goes anywhere so you can too
• Can be installed in minutes
• Compact size, perfect fit for small spaces
• Toilet base is fixed to the floor
• Quick and easy access to chambers - no complex disassembly required
• Full containment housing stores waste securely
• Expandable capacity (with the addition of extra GTG Urine Bottles)
• Vented for odour-free operation
• Suitable for wet areas 

PACKAGE INCLUDES:

• Two chambers that separate solid and liquid waste
• Elongated seat for extra comfort
• Ventilation system including a 12-volt 5-watt fan in housing and transformer (240ac to 12vdc power supply)
• 1 x 125ml Nature Flush Enzymes & spray bottle
• Easy to follow EASY Installation and Maintenance Manual

Consumables Nature Quick and Organic Mix may not be included in the packages, please buy consumables from the available list online

Nature Quick is currently not available in NZ

SPEC:

Height: 503 mm Width: 400 mm Depth: 609 mm

Weight: 11.3 kg Seat Height: 457 mm

RV Self-Containment Regulations require the toilet to (1) be fixed to the floor;  (2) store waste securely; (3) be vented and; (4) have a liquid capacity of 1L per day per person for a minimum of 3 days.

The GTG Urine Bottle offers 8L liquid capacity, providing 4 days self-containment for 2 people.

Additional GTG Urine Bottles offer increased capacity. Full bottles are to be kept on board in a suitably vented locker until a dump station is available to empty them. Please speak to your SC (self-containment) officer for a final say on the matter. 

For details about RV Self-Containment, please refer to the Self-contained Motor Vehicles Legislation Act 2023 and the Plumbers, Gasfitters, and Drainlayers (Self-Contained Vehicles) Regulations 2023

WCTNZ® is the exclusive authorized distributor of Sun-Mar™ composting toilets in New Zealand. All Sun-Mar™ products available through WCTNZ® are guaranteed authentic, include official manufacturer warranties, and come with comprehensive local customer support—making us New Zealand’s trusted source for sustainable, waterless composting toilet solutions.

Copyright © 2025 Waterless Composting Toilets NZ Limited (WCTNZ®). All short and long product descriptions and content are the property of WCTNZ® | Waterless Composting Toilets NZ. All rights reserved.

This content has been reviewed and approved by Dylan Timney, Managing Director of WCTNZ®, who brings over 17 years of composting toilet expertise and 16 years of experience in building and eco-construction in New Zealand.

Last reviewed: June 26, 2025