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Luxury home exterior at dusk windows and doors by Bonelli

Redefining Boundaries

We are pioneers of industry providing uncommon window and door solutions to one-of-a-kind engineering and design challenges.

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Our Partners

“We've done some extreme things with our windows and doors, and have found people at Duratherm not just willing, but actually excited, to be pushed to their limits.”

Alex Anmahian, Anmahian Winton Architects

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Why the Luxury Division of Pella

Pioneers of Industry

We are the conversation leaders providing unconventional solutions and product innovation to discerning architects in the building industry and beyond.

Exclusive Collaboration

We are skilled craftsmen with decades of experience doing things no one in the world is doing. Our brands complement and build on one another.

Authentic Artisanship

We provide world-class quality and depth of detail in every product, with delicate and deliberate material selection and a limitless product offering.

Featured Project

exeter library

Phillips Exeter Academy Library
Exeter, NH

Louis Kahn

Steve Rosenthan

Commissioned in 1965 to world-famous architect, Louis Kahn, the Exeter Library is a pillar of studied architecture. Duratherm founder Philip Cole provided all the millwork for this project, including windows, study carrels and paneling. It was his work with Louis Kahn on this project that inspired Cole to found a company specializing in monumental teak windows for institutional and commercial use.

Our Work

beachfront southhampton home exterior at dusk
  • Location:

    Shelter Island, NY

  • Architect:

    Kohn Pederson Fox

  • Builder:

    Wright & Co

the entryway of a tropical luxury home
  • Location:

    Harbour Island, Bahamas

  • Architect:

    The Office of Thierry W Despont LTD.

  • Builder:

    Xhema Custom Builders Inc

A traditional hamptons home in New York
  • Location:

    Quogue, NY

  • Architect:

    Robert A. M. Stern Architects

  • Builder:

    James Reeve Construction

  • Photo:

    Peter Aaron / OTTO

Redefine the boundaries with the Luxury Division of Pella.

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