Beautiful and Easy Window Replacement

If you’re looking for replacement windows that are more beautiful, durable and resistant to the elements than vinyl, Infinity from Marvin should be at the top of your list. A family-owned company with a 100-year history of quality, innovation and craftsmanship, Marvin is not your usual replacement window company.

Infinity fiberglass windows are thoughtfully designed to replicate the look of traditional wood windows, giving your home a warm interior aesthetic, while providing low-maintenance exteriors and energy-efficient features that exceed ENERGY STAR® qualifications. What’s more, streamlined ordering choices make your window replacement process as easy as possible.

  • Energy-efficient, ENERGY STAR® qualified
  • Easy to maintain
  • The look of real wood
  • Innovative, strong fiberglass material

Big L Windows and Doors proudly offers Infinity from Marvin windows.


"*" indicates required fields




When you own an older home, there comes a time when the original wooden windows stop working for you—the sash cords have broken, the glazing is giving way, they’re drafty and let in too much cold air. But you hate to give up the traditional look of wood for vinyl replacement windows—the look and feel of those plastic windows just isn’t the same.

That’s what makes Infinity from Marvin a better replacement window. Infinity fiberglass replacement windows give you the option of EverWood®, a sustainable, engineered wood-grain finish, for the look and feel of wood interiors. You can also choose from quality acrylic interior finishes in stone white, off white or on-trend bronze and ebony—colors you cannot get with vinyl replacement windows.

Living in northwestern New York, you want replacement windows that offer thermal performance along with weather resistance. Infinity from Marvin replacement windows are carefully engineered from strong and durable Ultrex® fiberglass, which will not warp or rot and resists sticking. This state-of-the-art pultruded fiberglass material outperforms and outlasts vinyl, roll-form aluminum, and other fiberglass composites. In fact, the material has passed numerous, rigorous tests to earn the American Architectural Manufacturers Association verification that Ultrex is the best in class among fiberglass products. Ultrex fiberglass makes for virtually indestructible window interiors and exteriors that stand up to rain, sun, wind, heat and time, so your windows will keep on looking beautiful and working beautifully for years.


Infinity is a leader in ENERGY STAR® qualified replacement windows, with energy-efficient options that make your home feel more comfortable in every season. Choose from a range of Low E insulating glass coatings. In our cold climate, you’ll want to look for a low U-factor and higher Solar Heat Gain Coefficient (SHGC). The experts at Big L Windows and Doors can help you determine the right glass options for optimum energy efficiency in our local conditions.

Infinity from Marvin replacement windows also let you express your style through a wide variety of design options and finishes. You can have replacement windows made to your exact specifications, even for special shapes. You can add architectural interest and character with simulated divided lites (SDLs) for an authentic aesthetic, or grilles-between-the-glass for easy cleaning, in charming assortment of patterns.

On the exterior of your home, Infinity windows provide great curb appeal with a stylish palette of on-trend colors. And Infinity’s low-maintenance acrylic finishes resist scratches, chalking, fading, chipping, denting and peeling.

Infinity from Marvin replacement windows are built for the way you live. With their timeless design and superior performance, you’ll be able to focus on enjoying the views, abundant light, fresh air from windows that are easy to open, easy to clean and easy to maintain—eliminating the frustrations of your old or no longer functional windows.