SD52/G Strongwood® Security Window – 1155mm Wide × 1775mm High
The SD52/G is a medium-format Strongwood® Security Window in the 1775mm high sublight range. This model features a fixed sublight panel at the bottom below the opening sash, giving a full-height glazed appearance while maintaining the complete Strongwood® security specification throughout. Solid lengths of steel are encased within each cottage pane bar, and the bars are fixed to the frame — not the sash — so the window remains secure even when open.
The steel bars continue uninterrupted from the fixed sublight below through into the opening sash above — the security grid is unbroken across the full 1775mm height of the window.
How the Strongwood® System Works
A standard cottage pane window has timber horizontal and vertical bars on the opening sashes. On a Strongwood® window, the cottage pane bars are fixed to the frame — not the sash. The opening sash is full pane, which means:
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Easy cleaning – the full pane sash opens freely with no bars obstructing access to the glass
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Secure when open – the steel-cored bars remain fixed to the frame, so the window is guarded whether open or closed
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Genuine burglar resistance – solid steel lengths encased inside every timber bar make them extremely difficult to cut or force
Key Features
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Fixed sublight at bottom – full-height glazed appearance with a fixed lower panel below the opening sash
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Uninterrupted steel bar grid – bars continue from the fixed sublight below through the opening sash above for unbroken security across the full height
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Solid steel encased in cottage pane bars – genuine security, not just aesthetics
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Bars fixed to frame, not sash – full pane opening sash for easy cleaning
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Secure when open – ventilate safely without compromising burglar resistance
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Mild steel easy-clean friction hinges and solid brass handles – quality hardware throughout
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Integrated weather strip on top rail – overlaps the opening sash to prevent water ingress
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Cottage pane profile – classic South African style
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Timber construction – natural warmth and character
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Opens outwards – standard South African timber window operation
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Supplied unfinished – ready for your choice of paint, stain, or sealer
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Excludes glass – must be sourced and fitted separately
Specifications
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Model: SD52/G
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Width: 1155mm
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Height: 1775mm
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Frame depth: 90mm
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Layout: Fixed sublight panel (lower) with opening sash (upper)
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Frame sections (fixed into wall) – sides & bottom: 44 × 67mm
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Frame sections (fixed into wall) – top rail: 44 × 90mm (with integrated weather strip)
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Opening casement section: 44 × 56mm
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Style: Cottage pane with Strongwood® steel security bars fixed to frame
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Hardware: Mild steel easy-clean friction hinges and solid brass handles
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Material: Timber with solid steel bar cores
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Opening sash: Full pane (bars on frame, not sash)
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Opening direction: Outward opening
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Finish: Unfinished – ready for painting or staining
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Glass: Excludes glass – must be sourced separately
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Lead time: 14–21 days from order confirmation
Frequently Asked Questions
What does the “/G” mean in SD52/G?
The “/G” denotes a fixed sublight at the bottom of the window. The lower section is a fixed glazed panel; the upper section is the standard Strongwood® opening sash. Together they span the full 1775mm height. The steel bars run continuously through both sections — the security grid is uninterrupted from bottom to top.
Are the steel bars continuous through the sublight?
Yes. The steel-cored cottage pane bars continue uninterrupted from the fixed sublight below through into the opening sash above. There is no gap in the security grid at the junction between the two sections.
What hardware is supplied with this window?
The SD52/G is supplied with mild steel easy-clean friction hinges and solid brass handles. The top rail includes an integrated weather strip that overlaps the opening sash to prevent water ingress.
What makes a Strongwood® window different from a standard cottage pane window?
On a standard cottage pane window, the horizontal and vertical timber bars are part of the opening sash. On a Strongwood® window, the bars are fixed to the frame and the opening sash is full pane. This means the sash opens freely for easy cleaning, while the steel-cored bars remain in place — keeping the window secure whether it is open or closed.
Is this window secure when open?
Yes — the steel-cored bars are fixed to the frame, not the sash. When the sash is open for ventilation, the bars remain in place across the opening, maintaining full burglar resistance.
Does this window include glass?
No. Glass is excluded and must be sourced and fitted separately by a glazier. Measure each pane opening individually — the sublight and opening sash panes will differ in size.
Which direction does this window open?
The opening sash opens outwards, which is standard for South African timber windows. The fixed sublight does not open.
What finish is applied to this window?
The window is supplied unfinished. After installation, apply a quality exterior wood paint, stain, or sealer. Seal all surfaces — including the bottom rail and any end grain — to protect against moisture.
What size is this window?
The SD52/G measures 1155mm wide × 1775mm high. This medium-format full-height window suits bedrooms, living rooms, and general residential openings where a tall, secure window is required.
What is the lead time?
Lead time is 14–21 days from order confirmation. Nationwide delivery is available across South Africa.
Where can I buy the SD52/G Strongwood® Security Window?
The SD52/G Strongwood® Security Window is available online at doorsdirect.co.za with nationwide delivery across South Africa, including Johannesburg, Cape Town, Durban, and Pretoria.
Can I get a custom size?
Custom sizes may be available. Contact us with your opening dimensions and we will advise on options and pricing.
