Citadel Steel-Frame Windows and Doors

Why Our Steel Windows and Doors Instead of Aluminum Systems?

Steel is three times stronger than aluminum

Steel frames are welded at the corners, without the unattractive join lines or design vulnerabilities of aluminum frames

Steel’s superior strength also allows for longer frames on larger windows

Steel frames create narrower sightlines, reducing the ratio of glass to framing and lowering the U-value

Steel is five times more thermally resistant than aluminum

Steel can transcend architectural styles, from urban commercial to modern luxury residential

Steel is 100 percent recyclable

Our steel-frame systems are powder coated and hot dipped in a galvanized substrate for superior corrosion resistance

Citadel Luxury Steel Windows Living Room

Choose from Cold- and Hard-Rolled Steel Frames

Advantages of Cold-Rolled Steel

Narrowest Sightlines and Greatest Precision

Rolled into hollow sections after cooling to near room temperature, cold-rolled steel can be shaped into precise dimensions that create narrower sightlines.

Stronger

The cold-working of flat steel coils at lower temperatures boosts the yield strength and – to a lesser degree – the ultimate strength of cold-rolled steel.

Polished Look

With greater design flexibility at lower temperatures, cold-rolled steel can be crafted with a smoother, more finished surface.

Advantages of Hot-Rolled Steel

Ideal for Larger Steel Sections

Hot-rolled steel is shaped from solid steel billets at high temperatures, making it well suited for steel-frame systems that are structural or feature large sections.

Lower Costs

Hot-rolled steel requires less processing time, which lowers its production costs without diminishing its durability.

Classic Steel Look

Processed at over 1,700°F, hot-rolled steel profiles have a bold, untreated look that can be refined for modern industrial or urban designs.

Sliding Steel Doors - Lift And Slide - Living Room Daytime - Citadel

Choose from Thermally Broken and Non-Thermal Steel

Thermally Broken Steel Windows and Doors

Citadel’s thermally broken steel window and door profiles prevent the cold outside from traveling through the frame into the interior. With thermally insulated barriers between the interior- and exterior-facing frame sections, our CWD product lines offer NFRC-certified energy efficiency and U-values as low as 0.17.

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Non-Thermal Steel Windows and Doors

Citadel’s non-thermal steel window and door profiles are a favorite among designers and architects for projects in milder climates or interior features such as office corridors, partitions, wine rooms, shower enclosures, and large-room dividers with hidden or styled barn door tracks.

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