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Galvanised Steel Strap | Window Board Bracket Tie 90 Degree 150 x 50 x 25

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Technical Product Description: Barbarossa Galvanised 90 Degree Window Board Brackets (150x50x25x2mm)
Barbarossa Galvanised 90 Degree Window Board Brackets are heavy-duty, L-shaped fixing brackets specifically designed to provide strong and reliable support for internal and external window boards (window sills). Manufactured from thick galvanised steel, these brackets offer excellent corrosion resistance and structural strength for both new installations and replacement projects.

Key Specifications

  • Type: 90° angled / L-shaped window board support brackets
  • Dimensions: 150mm (vertical leg) × 50mm (horizontal leg) × 25mm (width) × 2mm thick
  • Material: Mild steel with galvanised coating
  • Holes: Pre-drilled 6mm diameter holes for easy fixing
  • Hole Configuration: Multiple holes on both legs for secure attachment to wall and window board
  • Finish: Galvanised for superior rust protection
  • Load Capacity: Designed to support typical domestic and light commercial window board load

Material & Construction

  • Made from high-quality 2mm thick steel plate for rigidity and strength.
  • Hot-dipped galvanised finish provides long-lasting protection against moisture, condensation, and external weather exposure.
  • Clean, pressed edges and precise 90° angle ensure a professional, flush fit.

Applications

  • Primary Uses:
    • Supporting timber, uPVC, MDF, or composite window boards / sills
    • New window installations and sill replacements
    • Internal and external window reveals
    • Bay windows and deep sill applications
    • Refurbishment and renovation projects
    • Light shelving or similar support uses where a strong 90° bracket is required 

Features & Benefits

  • Strong & Rigid: 2mm thick steel and generous 150mm height provide excellent support.
  • Corrosion Resistant: Galvanised finish ideal for humid areas, bathrooms, kitchens, and external windows.
  • Easy Installation: Pre-drilled 6mm holes allow quick and secure fixing.
  • Versatile: Works with most common window board materials and thicknesses.
  • Neat Finish: Low-profile design sits discreetly under the board.

Technical Notes 

  • Best For: Interior and exterior use where moisture may be present.
  • Load Guidance: Suitable for standard window boards up to 300mm deep. For heavier stone or very wide sills, use additional brackets or consult a structural engineer.
  • Storage: Store in a dry area to preserve the galvanised coating.
  • Safety: Use appropriate fixings rated for your wall type and ensure correct load distribution

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