The WooWoo GT 330 is the high-capacity version of the batch composting system — built for sites with serious footfall. Campsites, glamping sites, allotments, forest schools, and public buildings all benefit from the 330-litre containers, which handle approximately 800 solid uses each before rotation. Two containers are included in the starter pack, giving around 1,600 total uses before you need to empty the first batch.
Like the GT 120, it uses WooWoo's capillary base system for automatic moisture management — no need to manually balance the compost. Wind-powered ventilation keeps the system completely off-grid and odour-free.
Key Specifications
Container capacity: 330 litres each (2 containers included)
Approx. uses per container: 800 solid uses
Container dimensions: 600mm (W) x 760mm (D) x 920mm (H)
Minimum underfloor clearance: 880mm–1,140mm (depending on installation)
Ventilation: wind-powered spinning vent (black metal) included
No electrical connection required
What's Included
2 x 330-litre composting containers with capillary base
In-use lid with waste shaft cut-out
Batching lid for resting container
High-efficiency spinning wind vent with flexible connectors
Leachate hose (150cm)
Thermal toilet seat with lid
Heavy-duty wheels (transfer between containers for servicing)
Full installation guide
Installation
Designed for installation under a raised floor or deck with approximately 880mm–1,140mm clearance. The containers slide out on wheels for straightforward rotation and emptying. Ideal for purpose-built composting toilet buildings, raised platform structures, or any outbuilding with sufficient under-floor depth.
Note: 110mm vent pipe to outside air is user-supplied to match your building height.
Supplied by Woo Woo Waterless Toilets — Matt holds a trade account.