Louvre / Louvre Window | H1225 x W1800

The H1225 x W1200 double-bay aluminium louvre window is a wide-span architectural window engineered to deliver maximum natural airflow, panoramic outdoor views, and reliable weatherproofing for Australian homes. Measuring 1225mm high by 1800mm wide, this profile features two side-by-side louvre bays (Louvre / Louvre) within a single reinforced commercial aluminium outer frame. This dual-gallery design gives homeowners independent ventilation control across a generous 1800mm opening, making it an exceptional primary window for master bedrooms, open-plan living rooms, and sunrooms.

Key Features & Technical Specifications

• Dimensions & Bay Layout: Exactly 1225mm in height and 1800mm in width, configured as a double-bay louvre window with two independent operating banks of horizontal glass blades.

• Frame Profile & Strength: Built from commercial-grade extruded aluminium, engineered with a central structural mullion to prevent frame deflection, sagging, and blade rattling across wide 1800mm architectural openings.

• Glass & Blade Options: Configurable with 102mm or 152mm glass blades in Clear, Grey Tint, Low-E thermal glass, Satinlite Obscure for privacy, and double-glazed variants for superior climate insulation.

• Colour Palette: Choose from hard-wearing architectural powder-coated finishes including Pearl White, Custom Black, or specify a Custom Colour to match your exact exterior cladding and roofing materials.

• Screen & Security Compatibility: Built with an integrated external frame recess that accepts No Screens, standard Flyscreens, Diamond Grille, or heavy-duty Stainless Steel Security Screens across both bays.

• Hardware & Locking Mechanism: Equipped with dual mechanical blade galleries and key-lockable handles, allowing you to operate each louvre bay independently and clamp the blades shut securely.

• Weather & Energy Performance: Features perimeter dual-seal weather stripping and interlocking blade closure to stop air draughts and rain infiltration, helping your property achieve strong WERS compliance.

Ideal Applications for Australian Homes

A 1225mm high by 1800mm wide double-bay louvre is one of the most effective primary window configurations in residential construction. Its balanced height and expansive 1.8-metre width fit standard timber-frame and brick-veneer openings, making it a popular choice for master bedroom suites, open-plan dining rooms, and family living areas. Where a standard 1800mm sliding window only allows half of the glass area to slide open, a double-bay louvre window gives you 100 percent opening capacity across the entire frame.

Having two separate louvre bays provides a major practical advantage for daily climate control. On windy coastal afternoons, you can leave the windward bay closed to prevent papers from blowing around the room while tilting the opposite bay open to bring fresh air inside. Because the glass blades rotate on a horizontal axis, you can direct airflow upward toward the ceiling to cool the room without creating floor-level draughts.

This wide dimension also makes a striking visual feature in coastal homes across Sydney, Newcastle, and regional New South Wales. The marine-grade aluminium frame handles salty sea air effortlessly while framing wide backyard or ocean views.

Configuration Guidance: Customising Your Window

When ordering your H1225 x W1800 double-bay louvre window online, step through our custom configuration options to suit your room layout and environmental needs:

1. Selecting Your Colour: Pearl White remains a practical choice for coastal builds and classic weatherboard facades, reflecting intense summer heat. Custom Black creates a bold modern outline that pairs well with timber decking, matte black door hardware, and polished concrete floors. If your project requires an exact match to existing window frames, our Custom Colour service ensures a precise result.

2. Choosing Your Glass: Because an 1800mm wide window presents a large glass surface area, solar heat gain is an important consideration. For north or west-facing bedrooms and living rooms, Low-E glass or Grey Tint reduces afternoon glare and cuts heat transfer while keeping interiors bright. If the window faces a boundary fence or neighbouring property, Satinlite Obscure glass lets daylight in while protecting your personal privacy.

3. Picking the Right Screen: Bedrooms and living rooms require dependable insect protection during warm Australian evenings. Standard flyscreens keep mosquitoes and flies out while you leave your double-bay louvres open for overnight cooling. For ground-floor installations where security is a priority, upgrading to a Stainless Steel Security Screen lets you leave both bays tilted open safely while maintaining a reinforced steel barrier against intruders.

Australian Standards, Engineering & Quality Guarantee

Every H1225 x W1800 double-bay louvre window from New Age Construction Group is manufactured to comply with AS 2047, the mandatory Australian Standard for windows and external glazed doors. Wide 1800mm spans require exact gallery alignment and central structural mullion support to prevent blade rattling and wind deflection. This is why our frames undergo strict testing for structural deflection, operating force, air infiltration, and water penetration resistance.

Manufactured at our Smeaton Grange facility in New South Wales, our windows are built using commercial-grade aluminium and quality hardware engineered for Australian weather conditions. Whether you are a trade builder ordering for a residential development or a homeowner managing an extension, our windows arrive fully assembled and ready for installation. Standard lead times run between 3 to 5 weeks to accommodate custom powder coating, precision blade cutting, and quality control prior to Australia-wide dispatch.

Frequently Asked Questions

Why choose an 1800mm wide louvre window split into two bays? Individual glass louvre blades have a maximum safe span to prevent bending and rattling in high winds. By splitting an 1800mm wide frame into two side-by-side bays (Louvre / Louvre) with a reinforced central mullion, the window complies with Australian Standards while giving you independent airflow control for each side.

How does a double bay louvre compare to a standard sliding window for ventilation? A standard sliding window only opens across half of its total width because one glass panel must slide behind the other. A double-bay louvre window opens across 100 percent of its 1800mm width, delivering twice the natural ventilation capacity of a sliding window of the same size.

What is the standard manufacturing lead time for custom louvre windows? Custom aluminium windows from New Age Construction Group typically require a manufacturing lead time of 3 to 5 weeks. This allows sufficient time for custom powder coating, glass sizing, and thorough quality inspection before shipping anywhere in Australia.

Order Your Custom Louvre Window Today

Upgrade your bedroom, dining room, or living space with a wide, high-airflow architectural window. Configure your H1225 x W1800 double-bay aluminium louvre window above by choosing your frame colour, glass type, and screen option, or contact our Smeaton Grange team for a custom trade quote today.