Finally a thermally broken Steel Window for the Midwest Climate. Brombal has over 55 years of experience studying & perfecting the art of metalworking there is no substitution for experience.


Brombal USA offers a full line of hand-crafted steel windows and doors, custom built to your specifications. Your designs, made real. That’s the art of Brombal.

  • Thermally broken
  • High structural characteristics for large unobstructed openings
  • 3 times stronger than aluminum
  • 4 times less conductive than aluminum
  • Made from 100% recycled materials
  • Reduced coefficient of expansion
  • Narrow sight lines
  • Modern and traditional designs

Modern steel windows and doors

The Benefits and Beauty of Steel

Steel has many advantages over the materials like vinyl, wood, or aluminum. Brombal steel is an alloy designed for strength, durability, and versatility. A specialized zinc coating protects the window profile from oxidation and condensation. Each window leave the assembly line with a paint gripping finish.

The knowledge and expertise of Synergy staff makes design and construction easy and efficient for our customers.

Modern 90 degree corner bathroom windows

  • Steel is a better choice than aluminum for thermally-broken fenestration. Steel insulates 5x better than aluminum.
  • Structurally steel is 3x stronger than aluminum. This translates into the ability to fabricate larger door and window frames, while maintaining structural integrity.
  • Green in more ways than one. Brombal windows are made from 100% recycled steel. If you want them GREEN we have that covered as well. Powder coating color options are nearly infinite.
  • Extremely durability. Brombal windows can outlive the structure they are placed in. Studies show that steel windows can easily last and continue to function as much as 3x or 4x longer than aluminum, wood, or vinyl products.
  • Unparalleled beauty. Simple crisp outlines frame the landscape and allow light to enter the structure. Steel is a strong and bold material that exudes confidence, strength, and style.

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MN Lic. BC667153 | Copyright © 2017 Synergy Products