The Lukka Sigma30 Square In-Wall Flush Buttons is a practical and stylish way to complete a concealed toilet setup, offering smooth and reliable flushing control while keeping your bathroom looking neat and uncluttered. Its square design gives a more structured, contemporary feel that works well in both modern and transitional bathroom spaces, making it a popular choice for anyone wanting a clean, considered finish. Suitable for use with compatible concealed cistern systems, it helps keep all the working parts hidden behind the wall, leaving only a simple and easy-to-use control on display. Installation should always be carried out in line with the cistern manufacturer’s instructions to ensure proper alignment and dependable performance. Once fitted, it is very straightforward to maintain, requiring only a gentle wipe to keep it looking tidy in everyday use. The Lukka Sigma30 Square In-Wall Flush Buttons offers a thoughtful balance of practicality and design, making it a reliable finishing touch that enhances both the function and appearance of a bathroom without adding visual clutter.
Product Features:
- Designed for use with concealed cistern systems, the Lukka Sigma30 Square In-Wall Flush Buttons provides a reliable and easy-to-use flushing solution while keeping your bathroom looking clean, minimal, and free from visible cistern components.
- Ideal for homeowners, renovators, and interior designers who prefer a sharp, modern aesthetic, this flush button suits bathrooms where a neat, structured finish is just as important as everyday practicality.
- What makes this range stand out is its square design, offering a more defined and contemporary look compared to rounded alternatives, along with a wide choice of colour combinations to help you coordinate effortlessly with different bathroom styles.
- For installation, it is important to ensure compatibility with your concealed cistern system and follow the manufacturer’s fitting instructions closely for a secure and reliable setup. Once installed, it is easy to maintain with a soft cloth and mild cleaning solution to keep the surface looking its best.
- Features square in-wall flush buttons designed for concealed cistern systems, available in multiple finish combinations including chrome, matte black and black, matte black and chrome, matte chrome and chrome, matte white and chrome, matte white and white, white and chrome, and white and gold.
The Lukka Sigma30 Square In-Wall Flush Buttons brings a crisp, modern edge to any bathroom while keeping the overall space looking tidy and uncluttered. Its simple, well-balanced design makes it an easy fit for a wide range of interiors, offering both practicality and style in one thoughtful detail. It is a smart choice for anyone wanting a refined finishing touch that feels both functional and visually clean.
Warranty & care
Warranty: 15 years (tanks/frames) / 3 years valves / 3 years flush plates. Warranty periods and exclusions are set by the supplier. Your rights under the Australian Consumer Law are not affected.
Care: Clean with mild soapy water and a soft cloth. Avoid abrasive cleaners, scourers and harsh chemicals, which can damage finishes and may affect your warranty. Follow any care instructions supplied with the product.
No downloads are available for this product yet. Contact us for specifications.
Warranty & care
Warranty: 15 years (tanks/frames) / 3 years valves / 3 years flush plates. Warranty periods and exclusions are set by the supplier. Your rights under the Australian Consumer Law are not affected.
Care: Clean with mild soapy water and a soft cloth. Avoid abrasive cleaners, scourers and harsh chemicals, which can damage finishes and may affect your warranty. Follow any care instructions supplied with the product.
Delivery policy
Goods will not be delivered inside private residences. Delivery is limited to:
- Garage or carport, or
- Ground floor entrance (provided there are no stairs or access restrictions)
Promotional free delivery: Sydney Metro
During promotional periods where free delivery is offered, this applies to Sydney Metro addresses only and is provided under the following conditions:
- Ground floor drop-off service only
- One-person delivery service (driver only)
- No carrying goods upstairs or into multiple levels of a property
Exclusions
Free delivery promotions do not apply to:
- NSW regional locations
- Interstate locations
Standard delivery rates apply for all excluded areas.
Lead times
- Lead times vary by supplier. Each product page shows an estimated delivery window based on its supplier. Most suppliers deliver within 5–10 business days of your order.
- Made-to-order and special-order items: some suppliers add extra weeks for custom or made-to-order products. Extra weeks apply only to made-to-order products; the additional time is shown on the product page and confirmed with you after your order.
- Items held in stock by Renovation Kingdom: same-day pickup from North Parramatta when the item is held at that location.
Pickup
Pickup is available from our North Parramatta location for items held in stock there. Whether pickup is available for your cart is confirmed at checkout.
Additional delivery information
Stone bath deliveries are drop-off only.
Customers will be contacted by our warehouse team once their order is ready for collection or delivery.
A pick-up time must be booked prior to arrival using the provided booking link. Collections without a confirmed booking may experience delays due to warehouse scheduling.
Please note that weights and dimensions provided for products are approximate and may vary slightly. Customers are responsible for verifying final product measurements prior to installation.
Payment and security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Why buy from Renovation Kingdom
- Family-run Sydney supplier.
Helping Sydney renovators since 2014, with showrooms at Taren Point and North Parramatta. - Trusted brands.
Every product is backed by the manufacturer's warranty and a curated range from trusted suppliers. - Free expert advice.
Book a free one-hour consultation and get $200 off eligible orders of $2,000 or more. Book now - Price guarantee.
Found the same stocked item cheaper in Australia? We'll match it or beat it where possible. Details