Sliding Window | H1200 x W900

An aluminium sliding window measuring 1200mm high by 900mm wide is a versatile residential window engineered for bedrooms, bathrooms, studies, hallways, and stairwells. Standing at 1.2 metres tall by 900mm wide, this H1200 x W900 unit features two horizontal sashes that slide smoothly along an integrated track to provide controlled ventilation and bright natural daylight in compact wall openings. Built from heavy-duty Australian aluminium, it delivers dependable weatherproofing, low-maintenance operation, and crisp architectural sightlines for new home builds and renovations.

Why Choose an H1200 x W900 Sliding Window?

When you are planning window placement for rooms with limited horizontal wall space, an H1200 x W900 sliding window offers an ideal balance of vertical height, natural light, and structural efficiency. The 1200mm height provides a generous vertical span of glass that brightens interior spaces while still leaving ample wall room beneath the sill for furniture, bedroom desks, or bathroom vanities. It is a highly practical choice for bedrooms, home offices, and side-of-house walls where wider horizontal frames would not fit comfortably.

The compact 900mm width makes this unit easy to incorporate into narrow architectural cavities, stairwells, and hallways. Because the window sashes slide horizontally inside the frame track, the window never projects outward over exterior garden paths, walkways, or outdoor play areas when open. Inside your home, the operable sliding sash stays completely clear of curtains, roller blinds, and plantation shutters. You gain reliable everyday ventilation and clean visual proportions in a low-maintenance design that every member of the household can operate with ease.

Technical Specifications & Features

• Dimensions: 1200mm height x 900mm width (H1200 x W900 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 W900 aluminium sliding window to withstand extreme Australian weather conditions and demanding indoor environments. 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 portrait-style window is particularly useful for homes that require dependable cross-ventilation in secondary bedrooms, bathrooms, and walk-in robes. Unlike timber frames that can absorb moisture and require regular repainting, powder-coated aluminium remains completely stable and low-maintenance. A quick periodic wipe of the sill and tracks is all you need to keep the nylon rollers moving freely year after year.

How to Configure Your H1200 x W900 Window

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

Because an H1200 x W900 window features 1.08 square metres of glass surface area, your glazing selection makes a meaningful 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. If you are installing this unit in a bathroom, ensuite, or ground-floor bedroom facing a public walkway, selecting Satinlite Obscure glass gives you complete visual privacy while still letting in bright daylight. 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 W900 sliding window commonly installed? This portrait-style size is popular for bedrooms, bathrooms, studies, hallways, and stairwells. The 1200mm height lets in generous daylight, while the compact 900mm width fits comfortably into narrower wall sections where wide windows would not fit.

What rough stud opening size do I need for an H1200 x W900 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 940mm width allows adequate room for squaring, plumbing, and packing during installation.

Can I use an H1200 x W900 window in a bathroom or ensuite? Yes. This dimension is widely used in larger bathrooms and ensuites because it provides excellent ventilation and natural light. Selecting Satinlite Obscure glass in the configuration menu above provides full visual privacy from outside.

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.