HS309 Aluminium Horizontal Sliding Window – 3000 × 900mm
The HS309 aluminium horizontal sliding window is a large 3000 × 900mm four-panel window designed for wide openings where generous natural light and practical ventilation are required.
Its OXXO configuration has two fixed outer panels and two sliding centre sashes. The centre sashes slide away from each other towards the fixed outer panels, creating a balanced opening in the middle.
Large 3000 × 900mm Aluminium Sliding Window
At 3 metres wide, the HS309 is designed for larger openings where a smaller two-panel sliding window may not provide the desired proportions.
The four-panel arrangement spreads the glazing across the opening and provides a symmetrical appearance, making it particularly suitable for living areas, kitchens, entertainment areas and larger residential openings.
Four-Panel Horizontal Sliding Design
The HS309 uses an OXXO configuration:
O – Fixed left panel
X – Sliding centre panel
X – Sliding centre panel
O – Fixed right panel
The two centre sashes slide away from the centre towards the fixed outer panels, providing ventilation through the middle of the window.
This configuration combines a wide glazed area with practical sliding operation and requires no outward-opening space.
Clear or Frosted Glass
The HS309 is available with Clear or Frosted glass. The existing Sigmadoors product listing confirms both glazing choices.
Clear Glass provides maximum visibility and natural light and is the standard choice for most living areas and general applications.
Frosted Glass provides additional privacy while allowing natural light through the window.
Aluminium Frame Colours
Choose from Natural Anodized (Silver), White, Bronze, Charcoal or Black. These are the five finishes currently offered for the HS309 by Sigmadoors.
HS309 3000 × 900 Aluminium Window Price
The current HS309 3000 × 900 aluminium sliding window price is displayed with the product.
The window is supplied glazed and includes the operating components required for its sliding sashes. Sigmadoors’ existing listing identifies the HS309 as an Icon Series window fitted with glass, rollers, locking hardware and handles.
Supply, Installation & Custom Sizes
Order the HS309 as a standard 3000 × 900mm aluminium horizontal sliding window, or request a custom size or configuration where the standard window does not suit your opening.
Professional aluminium window installation is available on request. Always verify the structural opening and required manufacturing dimensions before ordering.

































