Marvin Ultrex Window Frames Features And Benefits

Marvin® Ultrex® Window Frames: Features and Benefits

As a Marvin® Authorized Replacement Contractor, 3JM Exteriors, Inc is proud to offer Infinity® replacement windows, featuring frames made from Ultrex®. In this blog, we take a closer look at the features and benefits that put Ultrex ahead of other replacement window frame materials.

Strength and Durability

Infinity replacement windows feature Ultrex frames. Unlike typical fiberglass frames, Ultrex is tested to be as strong as low-carbon steel and eight times stronger than vinyl. In fact, special diamond-tipped blades are used to cut it during manufacture. Whereas traditional window frame materials tend to warp from exposure to temperature extremes, Ultrex stays square and true. This allows slim window frames and sashes—translating to bigger glass areas—without compromising structure or stability. Fiberglass windows are also more durable, with a 38% longer useful life expectancy than vinyl.


Infinity is one of the few window replacement options on the market that find the perfect balance between brawn and beauty. Thanks to its stable build, Ultrex allows intricate profiles that create realistic wood textures that can stand up to close scrutiny. It features a patented coating system using a mechanically bonded acrylic finish that’s three times thicker than the market standard.

With Ultrex frames, you won’t have to worry about discoloring, scratching or denting during its life span. Infinity replacement windows are available in three interior and seven exterior color options, all of which require minimal maintenance.

Energy Efficiency

Infinity replacement windows are nothing if not energy-efficient. The aforementioned stability of Ultrex frames helps maintain an airtight seal, preventing heat leaks. Ultrex also has inherent insulation. Combined with Marvin’s double- or triple-pane glass options, Ultrex frames help minimize heat transfer and maintain stable indoor temperatures. This results in lower indoor heating and cooling requirements, which then leads to more comfortable indoor spaces all year round.

3JM Exteriors, Inc is the general contractor to turn to for all your roofing and window replacement needs. Give us a call at (630) 985-6494 or fill out our contact form. We serve customers in Lake Forest, Hinsdale and Schaumburg, IL.

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