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Premier Marvin Dealer – Windows & Doors

Room scene with Marvin Windows

Why Marvin® Brand Windows and Doors?

For more than four generations, Marvin’s windows and doors are built on a foundation of values and quality. Marvin still makes their windows and doors with techniques that have been refined and perfected over decades to meet the project’s exact specifications. The high quality and long-term value of Marvin products are a direct result of their craftsmanship, innovation and ability to create windows and doors to match almost any design and specification.

GR Mitchell’s on-staff window and door expert has over 20 years of experience working directly with Architects and Interior Designers, aiding in the specification for residential, institutional, and commercial buildings. For specific inquiries, reach out to Tom Keller directly using his office phone 717-874-5588.

We are Your Marvin Windows and Doors Dealer in Lancaster PA

GR Mitchell is more than just the Marvin dealer near you. As the Premiere Marvin Dealer in Lancaster County serving most of Pennsylvania, we are authorized to sell the Marvin Signature Collection (previously Marvin Windows and Doors), Marvin Elevate Collection (previously known as Integrity Wood-Ultrex) and Marvin Essential Collection (previously known as Integrity All Ultrex). We are also a dealer of Marvin’s Infinity Replacement Windows. Give us a call or stop by our window showroom.

Marvin Authorized Retailer
GR Mitchell
14 Beaver Valley Pike
Willow Street, PA 17584


Store Hours:
Mon – Fri: 7am – 7pm

Saturday: 7am – 5pm
Sunday: 10am – 3pm

Marvin Signature Ultimate Collection (previously known as Marvin Windows and Doors)

Marvin Windows Supplied By GR MitchellRedefining the Standard. Made for those who care about every detail. The Marvin Signature Ultimate product line offers beautiful design, craftsman-quality construction and a vast selection of shapes, sizes and options. With extensive customization opportunities and versatility across architectural styles, Signature Ultimate windows and doors can be used in a wide range of projects – including traditional, contemporary, transitional, historic, craftsman or whatever style fits your project.

Unmatched Craftsmanship

Signature Ultimate windows and doors are available in a range of wood species and a variety of stains and paint options. Marvin sands, conditions, stains and oven-cures each individual piece of wood, providing a rich interior finish.

Design Possibilities

The beauty of Signature Ultimate is found in every thoughtful detail that, when combined, can completely transform how a room feels. It’s extensive selection of shapes, styles, sizes and options means more flexibility to meet any design challenge. And if you can’t find what you’re looking for, Marvin can help you make nearly anything you can imagine.

Extraordinary Innovations

Innovation is found in simple smart breakthroughs like Marvin’s Lift Lock hardware, which allows for easy access to open and lock a window. It’s in Marvin’s Lock Status Sensor: a home automation solution that gives homeowners peace-of-mind because it indicates if a window or door is closed and locked, or if it’s unlocked.

Marvin Elevate Collection (previously known as Integrity Wood-Ultrex®)

Marvin Ultrex

An ideal blend of design and strength, patented fiberglass exteriors stand up to all elements, outperforming and outlasting vinyl, while warm wood interiors add timeless beauty.

Proven Strength

Marvin’s proprietary fiberglass is 8x stronger than vinyl and 3x stronger than vinyl/wood composites. It resists fading, chalking, peeling and cracking.

Stylish Design

Warm wood interiors and on-trend styles; every feature and options has been carefully considered so the windows can either make a statement or blend into the existing décor.

Powerful durability

Marvin’s pultruded fiberglass remains stable in extreme temperatures and expands at nearly the same rate as glass, so Elevate windows stay square and strong even in harsh conditions.

The four advantages of fiberglass

AAMA Verified Fiberglass Finish
Ultrex is the first fiberglass finish to be verified to any of AAMA’s 624-10 voluntary finish specifications for fiber reinforced thermoset profiles (fiberglass). The Ultrex patented acrylic cap finish is verified AAMA 623-10 and 624-10, and has passed the AAMA 625-10 lab-based performance test protocols; 625-10 outdoor weathering test protocols are in process. With the industry’s best fiberglass finish, Ultrex resists fading, chalking, scratching, and cracking to keep your project looking good for years to come.

Replacement Doors

Marvin’s Ultrex doors are surprisingly different from other replacement doors. Like the replacement windows, Ultrex doors can be custom sized and have an array of options like insulated glass, divided light patterns, multiple colors and finishes, and exterior trim and hardware options. Made from wood or Ultrex fiberglass, Elevate and Essential doors are extremely durable and resistant to wear.

Replacement Door Configurations
Sliding doors are available in 2, 3, and 4 panel configurations.
Outswing and Inswing French Doors are available in 1, 2, and 3 panel configurations.

Marvin Ultrex Replacement Door Types

Marvin Essential Collection (previously known as Integrity All Ultrex®)

The Marvin Essential Collection’s clean lines and versatile styles make it easy to meet project demands. Strong, durable fiberglass exteriors and interiors are both striking and virtually maintenance free. Streamlined options make the ordering process straightforward. The Essential Collection brings together simplified design, quality and performance in one offering – streamlining your path from design to install.

Streamlined Details

Narrow profiles, clean lines and simpler features and options, Essential makes it easier to choose and order.

Learn More about Marvin Windows

To learn more about Marvin you can download our brochure on simplifying window and door replacement or visit the Marvin website. You can also visit our showroom in Willow Street or call us at 717-464-2999.