The Lukka Sigma50 Square In-Wall Flush Buttons are a smart choice for anyone looking to create a clean, modern bathroom with a streamlined finish that feels both practical and stylish. Designed to work with concealed cistern systems, these square in-wall flush buttons help keep the toilet area looking neat and uncluttered while providing smooth and reliable flushing performance for everyday use. They are especially well suited to contemporary homes, renovation projects, and compact bathrooms where a minimalist built-in look can make the space feel more open and refined. With a selection of finish options available, they can easily complement a wide range of bathroom fittings and interior styles without overpowering the overall design. For the best installation experience, it is worth checking compatibility with your in-wall cistern before fitting and handling the flush plate carefully during setup to maintain its precise square shape and polished appearance.
Product Features:
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Designed to provide a clean, modern finishing touch to concealed toilet cisterns, these square in-wall flush buttons offer smooth and reliable flushing control while keeping your bathroom looking streamlined and uncluttered.
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A great choice for contemporary bathrooms, powder rooms, and renovation projects, the Lukka Sigma50 Square In-Wall Flush Buttons suit homeowners who want a stylish, minimalist look paired with dependable everyday performance.
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Available in a selection of brushed metal and matte black with brushed metal finish options, these flush buttons make it easy to coordinate with a wide range of tapware, accessories, and bathroom colour schemes.
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The in-wall design helps create a sleek appearance while saving visible space around the toilet area, making it especially suitable for modern layouts where a tidy, built-in look is preferred over traditional exposed fittings.
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For best results, ensure compatibility with your concealed cistern system before installation and handle the flush plate carefully during fitting to maintain its clean square edges and premium surface finish.
The Lukka Sigma50 Square In-Wall Flush Buttons bring together modern styling and practical everyday functionality in one simple upgrade. Their sleek appearance and versatile finish options make them an easy addition to both new bathrooms and renovation projects, helping create a polished space that feels contemporary and well considered.
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.
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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 or Taren Point when the item is held at that location.
Pickup
Pickup is available from our North Parramatta and Taren Point locations for items held in stock at either location. 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.
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