-Durable, Leak-Proof Construction - Made from high-density, impact-resistant, one-piece blow-moulded HDPE, ensuring long-term reliability without leaks. -Versatile Compatibility - Suitable for use with all Mercio Wall-Hung Pans and compatible with both S-trap and P-trap toilet pan installations, providing design flexibility. -Supports All Sigma Buttons - Compatible with over 30 mechanical, pneumatic, or electronic Sigma flush button designs available in Australia, allowing a variety of customization options. -WELS 4 Star Rating - Environmentally friendly with a dual flush capacity of 4.5L/3L, promoting sustainable water usage. -Strong and Sturdy - The Sigma8 Duofix system for wall-hung pans can support up to 400kg, complying with AS 1172.1 standards, ensuring safety and stability. -Easy Servicing Access - Equipped with a dual-flush plate that allows easy access to service internal components, making maintenance simple and efficient. -Fits Standard Walls - Designed to fit standard 90mm wall cavities, making it suitable for various installation environments.