EcoLet™ | Separera Mini - RV Backing Plate

Purpose-built for mobile applications, this backing plate stabilises the EcoLet™ Separera Mini in motorhomes and campervans, creating a rigid, flat mounting surface that resists vibration and movement on the road. It also streamlines conversions from chemical/cassette toilets—spanning legacy wall cut-outs and cosmetic damage to reduce remedial work and deliver a clean, factory-style finish.

Features

Stabilising mount for RV use — securely fixes the Separera Mini, keeping it stable under travel vibrations and aligning with the ‘green sticker’ requirements of the Plumbers, Gasfitters and Drainlayers (Self-Contained Vehicles) Regulations 2023.
Model-specific fit — engineered for the EcoLet™ Separera Mini to mount securely and align correctly.
Conversion-friendly — covers existing openings so you can avoid extensive wall repairs.
Professional finish — provides a smooth, uniform surface for a clean bathroom aesthetic.
Built for the road — durable construction suited to vibration and regular travel.
Ideal for RV upgrades — supports the switch from chemical systems to a modern composting toilet.

Fit & Compatibility

Maximum hole cover: 370 mm (W) × 350 mm (H).
Model requirement: Compatible only with the EcoLet™ Separera Mini featuring the lowered vent outlet (vent near the base). Not compatible with earlier Minis, including units using the Urine Extraction system prior to April 2025 or Minis with a higher vent location.
Note on installation with the Urine Extraction model: If your Mini uses extraction and you’re draining through the rear into a black tank, you’ll need to drill an additional hole in the backing plate for that line.

Replacing Cassette / Flush Toilets

Sized to cover many common wall cut-outs left by removed cassette or water-flush toilets, including:

• Thetford C200 / C260
• Thetford C250 / C263
• Dometic CTS 4110 / 4111

Compatible access door replacements (check dimensions for your vehicle):

• Thetford Access Door 3
• Thetford Access Door 4
• Selected Dometic access hatches Service Door 3 or 5 (check specific size)

Installer responsibility: RV and caravan wall cut-outs vary. Please confirm your existing opening, internal wall depth, hatch size, access orientation, and internal clearance before purchase.

WCTNZ® is the exclusive authorized distributor of EcoLet™ composting toilets in New Zealand. All EcoLet™ 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: September 11, 2025