Coetz™ Top Hung – 1800 × 900 mm – Twin Opener

Where a top hung aluminium window 1800 × 900 works best

Living rooms, open-plan dining areas and long bedroom walls. The 1.8 m width pulls daylight deep into a room, while the 900 mm height keeps the sill high enough for a sofa, a sideboard or a run of kitchen units to sit underneath without blocking the glass.

Why a twin opener across 1800 mm

At 1.8 m a single sash would be unwieldy and heavy on its hardware. Two openers keep each sash a sensible size, give you directional control of the airflow, and let you leave one side open for background ventilation while the other stays shut against wind or rain. It is one of the most specified sizes we build, which is why we keep the top hung aluminium window 1800 × 900 as a standard catalogue item rather than a custom order.

Top hung aluminium window 1800 × 900: fitting notes

The frame is manufactured at 1790 × 890 mm. An 1.8 m opening needs a properly sized lintel and a genuinely level bearing — any sag across the span shows up immediately as an uneven gap along the top of the sashes. Measure the width at top, middle and bottom and work from the smallest figure.

Glass and finish on this top hung aluminium window 1800 × 900

Every unit is glazed as standard with 6.38 mm clear laminated safety glass. Laminated glass holds together on impact because the interlayer retains the fragments, which is why it is our standard rather than an upgrade. The frame is powder coated in your choice of Black, White, Bronze, Charcoal or Natural Anodised, and the price shown already includes 20% off.

Ordering this top hung aluminium window 1800 × 900

This is a made-to-order unit with a lead time of 1–2 days from order. Aluminium windows and doors are supplied only — installation is arranged by your own builder or installer, which keeps the manufactured product separate from the installation contract. Collection is from Laser Park, Roodepoort, with Gauteng delivery and national supply options depending on the order and destination.

If your opening does not match this size, we manufacture to your dimensions — send the structural opening width and height and we will confirm what can be built. Final responsibility for measurements rests with the customer, so check the opening before ordering.