Infinity Partner Detail

G R Mitchell Design Center

Infinity from Marvin hand-selected us as their Independent retail partner based on our expertise and passion for serving our community.

Infinity Replacement Windows

Infinity Windows from G. R. Mitchell in Willow Street, PA

G. R. Mitchell of Willow Street is an exclusive Infinity from Marvin window and door replacement partner. Infinity high-quality Ultrex® fiberglass replacement windows and patio doors are designed to look like traditional wood windows and doors, but with low-maintenance, long-lasting, performance.

If you want to know more about replacing your windows and doors with new Infinity from Marvin windows and doors contact G. R. Mitchell of Willow Street today for a free estimate.

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Schedule a Free In-Home Consultation from a Local Expert

Schedule a consultation with G R Mitchell Design Center to learn how Infinity can help you bring new life to your home.
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Built to last with Ultrex fiberglass

Infinity from Marvin fiberglass windows and doors are built with Ultrex® fiberglass making Infinity windows stronger than vinyl windows and requiring less maintenance than wood windows.

COMPARE INFINITY Vinyl Vinyl/Wood Composites (Fibrex®) Infinity Ultrex® Fiberglass
DURABILITY
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GOOD BETTER BEST
STABILITY
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GOOD BETTER BEST
STRENGTH
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GOOD BETTER BEST

Fibrex® is a registered trademark of Andersen Corporation.

Explore Infinity’s fiberglass window and patio door collection

Browse our complete replacement window patio door collection to learn how Infinity from Marvin fiberglass windows offer durability, style and strong performance.

Explore Infinity’s fiberglass window and patio door collection

Browse our complete replacement window patio door collection to learn how Infinity from Marvin fiberglass windows offer durability, style and strong performance.