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Imagine a window frame material that's stronger than aluminum, as energy efficient as wood and vinyl, and with the expansion and contraction coefficient of glass.Finally, a window for any design, nearly any structural requirement, in any climate on Earth. Fiberglass itself is really nothing new. It's been floating boats and adding strength to ladders for years. But the complex profiles required for window designs have been impossible to attain with fiberglass.

Milgard Windows and Doors

     Ultra Series

      Introducing Milgard Ultra Series, the newest line of windows from Milgard Windows, already offering the broadest window selection in the industry.  Milgard's R&D team challenged this perception of fiberglass and engineered a window system that's impervious to water, cold, heat, insects, salt air and ultraviolet. Milgard Ultra Series can't warp, peel, crack, split or pit no matter what Mother Nature throws its way. In fact, we guarantee it.

                  WoodClad Series

At Milgard, they already offer the broadest window line in the industry. So why would they treat doors any differently? The WoodClad patio doors offer the designer, builder or homeowner hundreds of styles, hardware options, grid patterns, and panel configurations. Whether you want the space efficiency of a sliding patio door, or the grand exit only a French door can provide, Milgard WoodClad patio doors are limited only by your imagination.


Marvin has been creating windows and doors of superior quality with a human touch. Over time, Marvin earned a reputation for fine craftsmanship, using only the best materials to build quality windows and doors that were beautiful and long lasting.When we say Integrity Windows and Doors are built to perform, we mean that literally. The exterior of Integrity products are made with Ultrex, a pultruded fiberglass material which is weather-resistant, strong, stable and long lasting. Marvin has over a decade of experience creating window and doors products made with this super-strong fiberglass material. The reason we chose it for Integrity products is simple: Ultrex is superior to vinyl, vinyl clad and roll-form aluminum clad windows in virtually every category.