The Marvin & Infinity® Story

The Marvin windows brand has a serious commitment to environmentalism and sustainability in the communities they serve.

The Marvin Windows Family Brand

The Marvin Family of Brands, headquartered in Warroad, MN, has become one of the world’s leading brands by adhering to the highest possible standards. They have proven that they stand behind their brands every step of the way and can provide a solution for any project. The Marvin brand is Built around you. Their exclusive innovations and high-performing energy efficiency offerings make this brand an industry-leading force with their design and function.

The Infinity® Windows Story

The Infinity® from Marvin Window line was created in 2002 when the company recognized a need for high-quality fiberglass windows and doors. Lindus Construction is an exclusive dealer for the Infinity®  Windows brand which can provide our customers with the traditional look of wood windows, but they are made out of Ultrex® fiberglass. Their design experience and superior materials made our decision easy when we chose to align ourselves with this Minnesota company.

Strength Ι Performance Ι Appearance


Infinity® windows and doors are made from a superior material technology called  Ultrex® fiberglass.


Strength, Performance, & Aesthetic With Every Window Installation

Ultrex® is comprised of strong cables of glass that are saturated with compound resins that are pulled through a heated die and cut with diamond-edge blades. Ultrex® is formed and cured all the way through the manufacturing cutting stage. This patented process creates an unmatched durability that will outlast and outperform other fiberglass windows.

Durability Infinity® Windows Are Built To Last

Ultrex® is eight times stronger than vinyl, making it as strong as low carbon steel. The product is so durable that it requires diamond-edged blades to penetrate the material when cutting it to size. Ultrex® possesses superior stability, resulting in windows that have unbeatable performance and are low-maintenance.

The Ultrex® Fiberglass Window Difference

  • Low maintenance
  • Replicates the look of traditional wood windows
  • Easy operation for the life of the window
  • Unmatched strength keeps windows square and true
  • Narrow profiles for more visibility and expanded views
  • Long-term stability helps eliminate seal failures and air leakage through the window
  • 8x stronger than vinyl
  • 38% longer useful life expectancy than vinyl

Energy Efficient Windows

The Marvin® Infinity® Windows line offers a variety of flexible and customizable window and door options that help balance the product investment with long-term performance and energy cost savings.

Glass & Glazing

Infinity® from Marvin® Replacement Windows offer a range of glazing options to meet the performance challenges of any climate. Insulating gases are pumped in spaces between the glass to slow the transfer of heat. All of these windows come standard with Low E2 and argon gas, but since all Marvin® products are made-to-order, you are able to add krypton gas to this blend which will increase the insulating capabilities of the window. Their glass and glazing techniques will suit any energy efficiency needs your home desires.

High Performance Tripane

Tripane glazing, available with argon or krypton insulating gas, provides excellent energy performance.  Tripane features two coated panes of glass with a third pane between them. Marvin® windows offers Tripane in a variety of Low E glass options.  Many Tripane glazed units have U-Factors less than 0.25, and fixed or combination units can be lower than 0.20 without sacrificing visible light transmission. Available in products where glazing thickness can be wider than ¾”.

Explore Marvin Infinity® Window Styles

Double Hung

The answer to your traditional favorite are the Marvin Infinity® Double Hung windows which are made of Ultrex Fiberglass. The effortless operation, advanced design and quality hardware makes this window style a front runner.

double hung window


If you are in search of a window that is easy to operate then this is your best option. Infinity® casement windows can be left or right hinged that allows effortless operation. The Easy Wash® hinges allow you the ability to clean the window both inside and out. These windows are also made out of Ultrex® fiberglass providing a clean and finished look.


These windows provide a perfect way to increase the ventilation in your home boasting dual locking points, scissor arm operations and a folding handle.


If you want to bring a streamlined look to your home a Marvin Infinity® glider windows is the perfect addition of quality craftsmanship and contemporary styling. With an ergonomic handle, two-point concealed lock and sleek hardware this window is a great space saving design when a swinging window won’t work.


Infinity® bay windows provide expanded views, but provide a low-maintenance interior. Bay windows will add a dramatic combination of allowing nature in while adding interest to any room.



Create a four, five or six panel assembly with Infinity® bow windows. Bow windows are a great way to open up a room and expand your views.


If your goal is to accentuate the unique architecture of your home its design than Infinity® Polygon and Picture Windows will make a dramatic improvement to your living space. Geometric combinations are available in a variety of custom shapes and sizes to add that extra special touch to your home.

Round Top

If you are in the market for a classic style with a clean state-of-the-art design, then round top windows would be a great addition to your home. These windows are versatile, durable and very easy for you to use.

Infinity from Marvin Window Replacement Projects:

Our Window Replacement Reviews

"Outstanding customer service and quality.  Salesperson, install crew, scheduler, etc. were all top notch.  They returned my emails and phone calls and answered questions every step of the way. They replaced our whole home with Infinity® from Marvin windows and our front door. We couldn’t be happier with Lindus and their team on how the house looks. The crew was meticulous with installation, framing, siding, and trim work. Highly, highly recommend."

Reed H.
Centerville, MN
December 15, 2022

"I am a perfectionist and was leery but I was pleasantly surprised as the workmanship performed was perfect and could not have been done any better. I had Jake and Jim as the main installers and I was impressed by how well they worked together. I am also pleased with the window choice as due to the excellent insulation value and UV glass I no longer have to run my furnace fan continuously in the winter or summer to maintain even temperatures throughout the house."

Chuck W.
Lake Elmo, MN
December 5, 2022

"Experience was great!"

Brad V.
Minneapolis, MN
November 17, 2022

This is our third project with the Lindus team. From start to finish, sales, measuring, color match, the install, to their own inspection - they all nailed it!! The metal roof on our shed is top notch. They made sure we knew how to maintain it, too. They replaced our remaining 4 bedroom windows with Infinity® From Marvin, of course. They glide so easy, our grandkids can open them. The city building inspector commented on their good work. We are grateful, and worry free now. Thank you so much!"

Shaloe N.
Oakdale, MN
August 30, 2022

"We had an egress window installed, and it was completed, inside and outside in one day. The workers were friendly, hard-working, and skilled. They worked together as a team, and there was nothing to clean up when they drove away. We are so pleased with their workmanship and their friendly demeanors."

Jane F.
Hamburg, MN
August 13, 2022

"Lindus Construction removed and replaced my old large patio door with transom windows. I could not be happier with Infinity from Marvin, the installation, the wonderful staff from Grayson, my salesperson, to the fabulous installers and the communication with staff regarding scheduling. I would definitely tell anyone i know looking for replacing windows or glass doors to use Lindus Construction." 

Mary S.
Maple Grove, MN
July 10, 2022

Explore Replacement Windows & Home Improvement Tips:

50% Off Installation Labor on Infinity® from Marvin Windows Through June 30th.
Some restrictions may apply. Call for details.