Free camping rules across Australia are tightening. State and territory councils are increasingly requiring self-contained vehicles to manage all waste internally — and that means the toilet in your build matters more than ever.
If you're a campervan builder, fleet operator, or van-lifer planning a serious Australian build, here's what you need to know about fixed cassette toilets, and why the BlackMOA™ BMCT12 is the one worth specifying.
The Problem With Most Fixed Cassette Toilets
Height is the issue most builders don't see coming until it's too late.
The majority of fixed cassette toilets on the market stand between 430mm and 500mm tall. That forces a cascade of modifications — raised bedding platforms, elevated seating, and in some cases, structural roof changes — all to accommodate a toilet that should have fitted without drama in the first place.
The result is a smaller living space, a larger build bill, and a van that's harder to sell or re-fit later.
The BlackMOA™ Fixed Toilet: Built Differently
The BlackMOA™ Fixed Cassette Toilet was designed in New Zealand specifically to solve this problem. At just 320mm high, it fits under existing bed platforms and bench seats without structural modifications, preserving the full usable space inside the van.
Here are the full specs:
Dimensions: 335mm (H) × 400mm (W) × 470mm (D) — 15mm tolerance advised
Waste Tank (Cassette): 12 litres
Clean Water Tank: 12 litres
Weight Capacity: 150kg
Product Weight: 8.7kg
Material: HDPE and galvanised steel
Flush Type: Manual push-button — no electricity, no pump, no wiring required
Cassette Access: Front-loading slide-out — no rear access needed
Vent: Optional 12mm adjustable vent with pressure-ball mechanism
Mounting: Floor screws or rail/rack slide-in system
The 12L waste cassette meets the 3L per person standard used in NZ self-containment certification — covering up to four passengers in a single van. If you'd prefer a slide-in/out setup, the BlackMOA™ Slider Rails are a practical add-on — they mount directly to the toilet base with 5mm screws, allowing the toilet to slide out smoothly for access and lock securely back in place.
Why No-Electricity Matters for Australian Builds
Australian van-lifers travelling remote — outback SA, the Kimberley, Cape York — depend on off-grid reliability. The BlackMOA™ runs entirely without electrical input. No 12V pump, no wiring, no failure point. Fill the 12L clean tank, push the flush button, done.
The optional vent connects to a standard hose and can be capped during transit. For builds without a vent requirement, the cap fits cleanly and the unit is fully sealed.
Installation: Floor, Rail, or Under-Bed
The BlackMOA™ Fixed Cassette Toilet mounts in three ways:
Floor-fixed — four screws through the base into plywood or timber flooring. Straightforward for most builds.
Rail-mounted — slides onto racks beneath a bed or seat, with the cassette still accessible from the front. No modification to the van's frame.
Under-bed integration — at 335mm tall, it fits within standard under-bed cavity heights in HiAce, Sprinter, and Transit conversions without raising the mattress platform.
The front-loading cassette means the access panel sits on the outside wall of the van, keeping the interior tidy and the emptying process clean.
NZ-Certified. AU-Ready.
New Zealand introduced mandatory fixed cassette toilet legislation in 2023 — one of the strictest self-containment standards in the region. The BlackMOA™ Fixed Cassette Toilet was designed and tested to meet those requirements. Australia's state-by-state free camping rules are moving in the same direction. Building with the BlackMOA™ now means the van is already ahead of where AU compliance is heading.
Spare parts — cassettes, vent caps, water tank caps, cassette lids — are stocked locally and available separately, keeping long-term maintenance straightforward.
Get in Touch
The BlackMOA™ Fixed Cassette Toilet is available for order now, with regular container deliveries landing each month. Visit www.mystenterprise.com or email [email protected]