Portella recently announced a new patent for a Thermally Broken Profile as architects continue to seek steel doors and windows with narrower frames and sightlines, without sacrificing superior energy performance values.

With emerging markets in Colorado and Baltimore, among other cities, Portella is providing architects with new options designed to bear the thermal challenges of any region. Being the only steel door and window manufacturer to use thermally bonded zinc galvanizing on each unit, Portella manufactures and tests its own custom designs to personally craft frames and muntin bars.


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