Sliding Window | H1200 x W1800

An aluminium sliding window measuring 1200mm high by 1800mm wide is a versatile residential window designed for bedrooms, kitchens, dining areas, and living rooms. Standing at 1.2 metres tall by 1.8 metres wide, this H1200 x W1800 unit features two horizontal sashes that slide smoothly along an integrated track to provide controlled ventilation and natural daylight. Built from heavy-duty Australian aluminium, it delivers dependable weatherproofing, low-maintenance operation, and clean architectural sightlines for new builds and renovations.

Why Choose an H1200 x W1800 Sliding Window?

When you are choosing window dimensions for a residential build or renovation, an H1200 x W1800 sliding window offers an ideal balance of natural light, privacy, and everyday airflow. The 1200mm height makes it a popular choice for bedrooms and living rooms where you want generous wall space beneath the sill for beds, desks, or entertainment units. It is also a practical dimension for kitchen walls, allowing you to position benches and splashbacks below the window while enjoying a broad view of your garden.

The 1800mm width provides a wide sheet of glass that brightens interior spaces without requiring multiple vertical mullions. Because the sashes slide horizontally within the frame, the window does not project outward over external pathways, decks, or garden beds when open. It also stays completely clear of internal blinds, curtains, and plantation shutters. You get practical ventilation and uncluttered outdoor views in a reliable design that is easy to operate for every member of the household.

Technical Specifications & Features

• Dimensions: 1200mm height x 1800mm width (H1200 x W1800 overall frame size).

• Frame Profile: Heavy-duty Australian architectural aluminium engineered to prevent twisting, frame rattling, and structural deflection under high wind loads.

• Glazing Options: Supplied standard with clear toughened safety glass. Configurable upgrades include Grey Tint for glare reduction, Low-E glass for improved thermal efficiency, Satinlite Obscure glass for bathroom privacy, and Double Glazing for superior acoustic and thermal insulation.

• Colour Finishes: Available in Pearl White, Custom Black, or Custom Colour powder-coated finishes formulated to resist chalking, peeling, and fading under harsh Australian sun.

• Screen Options: Choose from No Screens, standard insect Flyscreens, Diamond Grille security screens, or high-tensile Stainless Steel Security Screens.

• Hardware & Locking: Fitted with a keyed sash lock and heavy-duty adjustable nylon rollers for smooth sliding operation and dependable home security.

• Weatherproofing: High-performance perimeter weather seals and internal frame drainage channels protect your interior sills from driving rain, wind, and dust.

Built for Australian Climate & Lifestyle

We engineer this H1200 x W1800 aluminium sliding window to withstand extreme Australian weather conditions. Our aluminium frame profiles feature reinforced mullions and sturdy bottom tracks designed to maintain their structural shape over decades of daily use. Whether your property faces coastal salt air or hot western Sydney summers, the powder-coated finish will not rot, warp, or swell over time.

This window size is particularly useful for homes that need cross-ventilation without compromising indoor furniture placement. The sliding mechanism is straightforward and low-maintenance, requiring only an occasional wipe of the tracks to keep the rollers moving smoothly. You can install it across ground-floor rooms or upper-level bedrooms with equal confidence in its structural stability and weather resistance.

How to Configure Your H1200 x W1800 Window

You can customise every functional aspect of your window directly on this page to match your building plans. For contemporary architectural builds and modern extensions, Custom Black powder coating creates a sharp outline around your outdoor view. Traditional brick or rendered properties often look best with Pearl White for a classic, clean finish.

Because an H1200 x W1800 window provides 2.16 square metres of glass surface area, your glazing choice makes a noticeable difference to daily indoor comfort. Standard clear toughened glass works well for shaded side yards and covered patios. If your window faces north or west and receives direct afternoon sun, upgrading to Low-E glass or Double Glazing helps regulate indoor temperatures and reduce your air conditioning costs. You can also add custom insect screens or stainless steel security screens so you can leave your window open for cooling breezes with total peace of mind.

Certified Standards & Quality Guarantee

At New Age Construction Group, every aluminium window and door we manufacture complies with Australian Standard AS 2047. This certification guarantees tested wind resistance, structural deflection resistance, and water penetration resistance for residential building compliance across Australia.

We manufacture our aluminium windows at our Smeaton Grange base in NSW and deliver Australia-wide. Whether your project is in Sydney, Melbourne, Brisbane, Perth, Adelaide, or regional areas, you receive reliable trade-quality products ready for straightforward installation.

Frequently Asked Questions

Where is an H1200 x W1800 sliding window commonly installed? This size is popular for bedrooms, dining areas, and kitchens. The 1200mm height leaves plenty of room beneath the sill for furniture or kitchen benches, while the 1800mm width lets in plenty of natural daylight and fresh air.

What rough stud opening size do I need for an H1200 x W1800 window? Your carpenter or builder should prepare a framed opening approximately 20mm taller and 40mm wider than the window frame. For this unit, a rough stud opening of 1220mm height by 1840mm width allows adequate room for squaring, plumbing, and packing during installation.

Can I fit a security screen to an aluminium sliding window? Yes. You can select custom-built stainless steel security screens, Diamond Grille screens, or standard insect flyscreens in the configuration menu above. Screens fit securely into the external frame track so you can ventilate your home safely.

Order Your Custom Sliding Window Today

Ready to bring more light and fresh air into your home? Choose your preferred frame colour, glass type, and screen upgrades above to view your instant price. For custom dimensions or bulk trade orders for an upcoming build, contact the New Age Construction Group team today.