Infinity by Marvin offers the following fiberglass window styles for homes.
- Awning windows are hinged at the top and open outward diagonally. This design offers maximum airflow and allows rain to slide off when opened during storms.
- Bay windows: These windows have three panels set at 30- to 45-degree angles that protrude from your home. They offer architectural interest and create additional interior space for seating or storage.
- Bow windows: Similar to bay windows, these form a 3D shape but have a more curved angle.
- Casement windows: These windows attach by one or more hinges on the side and open to the left or right.
- Double-hung windows: These windows have a movable upper and lower sash for maximum ventilation and easy cleaning.
- Round top windows: These fixed windows come in a half-moon shape and add decorative touches to any room.
- Single-hung windows: This style has a movable lower sash and fixed upper sash for added security, especially in ground-floor rooms.
- Single-hung round-top windows add a quarter or half-moon arch to typical sing-hung windows.
- Slider windows: Also known as glider windows, these move along a track to the left or the right and work best in rooms with limited space.
- Unique shape windows: These decorative fixed windows come in various shapes, including pentagons, trapezoids, and octagons.
Infinity also offers in-swing French, sliding French, patio, and bi-fold doors.
A Better Fit for Colorado Homes — Why Fiberglass Outperforms Vinyl
Infinity® by Marvin® windows and doors are crafted from Ultrex® fiberglass — a material designed to stand up to Colorado’s extreme temperature swings. By contrast, many vinyl windows often warp, sag, or fail in less than a decade. While vinyl may cost less upfront, homeowners frequently face premature repairs or replacements. Choosing fiberglass means investing once in lasting comfort, efficiency, and value.
Energy Savings with Infinity® by Marvin®
Independent studies show that energy-efficient windows can reduce heating and cooling costs by 11% to 37%.* Infinity® by Marvin® products feature advanced glass packages and durable Ultrex® frames to help maintain indoor comfort year-round. As one of the nation’s oldest fiberglass window dealers, Gravina’s Window Center of Littleton® has seen firsthand how fiberglass consistently outperforms vinyl and wood in Colorado’s climate.
Trusted Colorado Dealer for Infinity® by Marvin® Windows
With more than 50 years of experience, Gravina’s Window Center of Littleton® is Colorado’s trusted source for Infinity® by Marvin® replacement windows and doors. As a family-owned business, we take pride in delivering attentive service, professional installation, and products that stand the test of time. Every window features Ultrex® fiberglass frames for durability, low maintenance, and lasting performance — all backed by an industry-leading limited lifetime warranty.
Schedule a free consultation today or visit our Littleton showroom to see Infinity® by Marvin® windows up close. Experience why Colorado homeowners continue to trust us for expert window replacement.
*Source: Efficient Windows Collaborative
**For J.D. Power 2019 award information, visit jdpower.com/awards
Infinity Windows Catalog
Options and sizing for Infinity windows and doors.
(36 pages)
