# Infinity by Marvin > Infinity by Marvin is a brand of premium fiberglass replacement windows and patio doors introduced by Marvin in 2002. Built with proprietary Ultrex® fiberglass, Infinity products are exclusively sold through a select network of dealer partners and through Infinity Replacement by Marvin, the brand's direct-to-consumer installation business. Infinity by Marvin is a brand of Marvin, a fourth- and fifth-generation family-owned business headquartered in Warroad, Minnesota. ## About - [Why Infinity](https://www.infinitywindows.com/about): Brand overview, mission, and the value proposition of Ultrex fiberglass windows and doors. - [History](https://www.infinitywindows.com/blog/history-of-infinity-from-marvin): The history of Infinity by Marvin since its founding in 2002. - [Why Ultrex](https://www.infinitywindows.com/blog/ultrex): Explanation of Ultrex fiberglass material — 8x stronger than vinyl, 5,000x less conductive than aluminum, and engineered for long-term performance. ## Products ### Windows - [All Windows](https://www.infinitywindows.com/windows): Full overview of the Infinity window product line. - [Awning Windows](https://www.infinitywindows.com/windows/awning): Hinged at the top, opens outward. Good for ventilation in rain-prone areas. - [Bay Windows](https://www.infinitywindows.com/windows/bay): Three-panel windows that project outward from the home. - [Bow Windows](https://www.infinitywindows.com/windows/bow): Curved multi-panel windows for panoramic views. - [Casement Windows](https://www.infinitywindows.com/windows/casement): Side-hinged, crank-operated windows with excellent airflow and energy efficiency. - [Double Hung Windows](https://www.infinitywindows.com/windows/double-hung): Both sashes operable; versatile for most room types. - [Round Top Windows](https://www.infinitywindows.com/windows/round-top): Arched upper profile for architectural interest. - [Single Hung Windows](https://www.infinitywindows.com/windows/single-hung): Fixed top sash, operable bottom sash. - [Single Hung Round Top Windows](https://www.infinitywindows.com/windows/single-hung-round-top): Single hung with arched top detail. - [Slider Windows](https://www.infinitywindows.com/windows/slider): Horizontally sliding sashes; ideal for wider wall spaces. - [Specialty Shape Windows](https://www.infinitywindows.com/windows/special-shape): Custom geometric shapes including triangles, octagons, and ellipticals. - [Window Profiles](https://www.infinitywindows.com/windows/features-and-options/window-profiles): Profile options and frame details. - [Finishes and Options](https://www.infinitywindows.com/windows/features-and-options): Color, hardware, glass, and customization options. ### Patio Doors - [All Doors](https://www.infinitywindows.com/doors): Full overview of the Infinity patio door product line. - [Bi-Fold Door](https://www.infinitywindows.com/doors/bi-fold): Multi-panel folding door for wide openings. - [Sliding French Door](https://www.infinitywindows.com/doors/sliding-french): French door aesthetic with sliding operation. - [Sliding Patio Door](https://www.infinitywindows.com/doors/sliding-patio): Classic sliding patio door in fiberglass. - [Swinging French Door](https://www.infinitywindows.com/doors/swinging-french): Traditional outswing or inswing French door. - [Door Finishes and Options](https://www.infinitywindows.com/doors/features-and-options): Color, hardware, and glass options for doors. ## Replacement Process - [Replacement Process](https://www.infinitywindows.com/process): Step-by-step overview of the Infinity replacement experience from consultation through installation. - [Infinity Replacement by Marvin](https://install.infinitywindows.com): The direct-to-consumer installation business operating in 19 U.S. markets. - [Find a Dealer](https://www.infinitywindows.com/find-a-dealer): Locate an authorized Infinity by Marvin dealer partner. - [Request a Consultation](https://www.infinitywindows.com/request-a-quote): Schedule a complimentary in-home consultation. ## Resources - [Resource Hub](https://www.infinitywindows.com/blog): Articles covering replacement windows, energy efficiency, design inspiration, and project guides. - [Energy Efficiency](https://www.infinitywindows.com/blog/energy-efficiency): How Infinity windows perform on energy efficiency metrics including U-factor, SHGC, and Energy Star certification. - [Replacement Costs](https://www.infinitywindows.com/blog/window-cost): Guide to understanding window replacement pricing and cost variables. - [Window Installation Process](https://www.infinitywindows.com/blog/window-installation-process): What to expect during a window replacement installation from start to finish. - [FAQs](https://www.infinitywindows.com/support/faqs): Frequently asked questions about products, installation, and service. - [Glossary](https://www.infinitywindows.com/support/glossary): Definitions of window and door terminology. - [Photo Gallery](https://www.infinitywindows.com/photo-gallery): Project photography showcasing installed Infinity windows and doors. - [Reviews](https://www.infinitywindows.com/reviews): Customer reviews and testimonials. ## Blog — High-Value Articles ### Windows by Room - [Best Kitchen Window Ideas Over the Sink](https://www.infinitywindows.com/blog/best-kitchen-window-ideas-over-the-sink): Guide to choosing the best window types and styles for kitchens, with a focus on over-the-sink placement. - [Types of Kitchen Windows](https://www.infinitywindows.com/blog/types-of-kitchen-windows): Overview of window styles and configurations that work best in kitchen settings. - [Best Bathroom Windows](https://www.infinitywindows.com/blog/best-bathroom-windows): Guide to selecting windows for bathrooms, covering privacy, ventilation, and moisture resistance. - [Living Room Window Ideas](https://www.infinitywindows.com/blog/living-room-window-ideas): Design ideas and window type recommendations for living rooms. - [Large Windows for Living Rooms](https://www.infinitywindows.com/blog/large-windows-for-living-room): How to incorporate large-scale windows into living room design for light and views. ### Window & Door Guidance - [How Much Do Replacement Windows Cost](https://www.infinitywindows.com/blog/window-cost): Breakdown of replacement window pricing variables including window type, size, material, and installation. - [How to Find and Fix Leaky Windows](https://www.infinitywindows.com/blog/find-and-fix-leaky-windows): Practical guide to identifying and resolving window air and water leaks. - [Divided Lites vs. Window Grilles](https://www.infinitywindows.com/blog/divided-lites-vs-window-grilles): Explanation of the difference between true divided lites and simulated grilles, and how each affects window aesthetics and performance. - [Replace Sliding Door with French Doors](https://www.infinitywindows.com/blog/replace-sliding-door-with-french-doors): What homeowners need to know when converting a sliding patio door opening to a French door configuration. - [Sliding Patio Door vs. Sliding French Door](https://www.infinitywindows.com/blog/sliding-patio-vs-sliding-french-door): Comparison of sliding patio and sliding French door styles covering aesthetics, operation, and best use cases. ## Support - [Support Center](https://www.infinitywindows.com/support): Product support, warranty information, and owner resources. - [Warranty](https://www.infinitywindows.com/support/warranty): Details of the Infinity by Marvin Limited Lifetime Warranty. - [Owner's Manual](https://www.infinitywindows.com/support/owners-manual): Operating and maintenance instructions for Infinity products. - [Care and Maintenance](https://www.infinitywindows.com/support/care-and-maintenance): Tips for maintaining Infinity fiberglass windows and doors. ## Legal - [Privacy Policy](https://www.infinitywindows.com/legal/privacy) - [Terms of Use](https://www.infinitywindows.com/legal/terms-of-use) - [California Users](https://www.infinitywindows.com/legal/california-users)