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Steel Frame Fixed Windows – Galvanised W40

Zen Doors & Windows
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Custom-made steel frame fixed windows crafted from robust solid hot rolled Ottostumm W40 Swiss steel. Featuring compact profiles and minimal sightlines, these architectural windows are suitable for internal or external applications and can be customised in size, design, glazing and finish. Available with single, double or triple glazing for a durable, high-performance window solution

Details
Specifications
  • Window Design: Custom
  • Window Type: Fixed
  • Location: External or Internal
  • Mounting Type: Tabs Outside of Jamb, Pre-Drilled Mounting Holes Inside of Jamb – visit our Mounting Types page for more options
  • Window Jamb & Sash: 55mm x 27mm
  • Glass Type: Visit our Glazing options page
  • Glass Thickness: Visit our Glazing options page
  • TDL: 20T or 30T
  • Beads: CTL 10, CTL15, CTM20, CTM30
  • Colour Finish: Visit our Paint Finishes page
  • Material: Solid Hot Rolled Swiss Ottostumm Steel Profile
    Stepped leg design, material thickness up to 5mm – Very compact profiles with minimal depth and sight-lines
    Appropriate for heavy-duty corrosion protection
  • Surface treatment: Zinc-magnesium pre-coating for corrosion protection
    Gritblasting SA 2.5; The 1st layer is a sealing primer; The 2nd layer is a high-durable top coating; Total thickness is at least 150-180 microns according to VMRG quality requirements.
  • Paint: 4FC (Fluorocarbon) (DAIKIN of Japan)
  • Package: Sealed Wooden Box
  • CAD Design Drawing: Yes
Features
  • Modern Architectural Design
  • Custom Hand Made Construction for Durable Functionality
  • Built from High Quality Galvanised Solid Hot Rolled W40 Profile
  • Fluorocarbon Coating, a superior finish to Powder coating
  • Single, Double or Triple Glazing Available
  • Designed to Impress and Built to Last
  • 10 Year Warranty – Must comply with our installation requirements.
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About the
Seller

Zen Doors & Windows design and manufacture bespoke architectural steel door and window systems for residential and commercial projects where cohesion, performance, and design integrity matter.

Our range spans iron entry doors, steel-framed glass doors, and steel windows, all custom-designed and handcrafted from precision-engineered steel profiles. Select Zen designs are also available in curated standard sizes, offering shorter lead times while maintaining the same material quality and detailing.

We don’t produce off-the-shelf solutions. We collaborate with homeowners, architects, interior designers, builders, and developers to deliver fully integrated steel systems that define spaces, enhance proportions, and elevate the entire project.

Whether it’s a single statement entry or a home or commercial development wrapped in steel, Zen creates continuity, character, and a point of difference that carries through every elevation and interior space.

Because true luxury isn’t one feature — it’s consistency, intent, and execution.

Verified ArchiPro Member3 years · Since 2023