We recently delivered Marvin Elevate windows and doors to a custom home set within the rolling farmland of the Lehigh Valley. This rural project highlights the durability and clean design of the Elevate Collection, well suited for homes that balance performance with understated style.

From navigating long gravel driveways to coordinating deliveries in more remote locations, Kuiken Brothers brings the same level of precision and care to every jobsite. Our experienced delivery team ensures materials arrive safely, on schedule, and ready for installation—supporting builders and homeowners, no matter how off the beaten path!

Why Marvin Elevate Windows?

This collection blends the warmth of real wood interiors with the strength, stability, and low-maintenance performance of fiberglass exteriors — perfect for homes that demand both beauty and long-term durability. When paired with Kuiken Brothers’ deep inventory and expert service, getting premium windows to your project has never been easier.

Why Materials Matter

Choosing the right materials for windows and doors is important when it comes to long-term appearance and performance. Ultrex, an innovative fiberglass material pioneered by Marvin over 25 years ago, was one of the first premium composites on the market. However, not all composites are created equal.

Some companies use materials with fundamentally different properties and performance values to produce a composite material, but Ultrex is different. High density woven fibers bound by a thermally-set resin makes Ultrex more resistant to pressure and temperature than vinyl-based composites. With such different materials grouped in the composites category, it becomes important to know what sets them apart.

Ultrex pultruded fiberglass has a tensile strength 8x stronger than vinyl and 3x stronger than non-fiberglass vinyl/wood composites. Windows and doors made with Ultrex bend and flex less, resist cracking and separating, and stand up better to everyday wear and tear.

The exceptional strength and stability of Ultrex eases installation and establishes a secure, long-lasting fit that stays square and true, year after year.

Why Choose Kuiken Brothers as Your Supplier? 

• Trusted window and door partner for builders, remodelers, and architects
• Professional delivery fleet capable of accessing tight, complex, and high-end sites
• Experienced millwork specialists who support projects from design through installation
• Industry-leading inventory levels to keep your schedule moving
• Serving NJ & NY with nine convenient locations

Ready to start Choosing Your Marvin Windows & Doors? Visit a Kuiken Brothers’ Showroom! 

Kuiken Brothers showrooms were built to be an extensions of our builder, remodeler, architect and designer customer’s business. Featuring inspirational, lifestyle installations, our Showrooms are the ideal location to meet with clients in advance of a project where a umber of major decisions can be made. The staff at Kuiken Brothers is happy to walk you through the options that are readily available from our inventory, and supported by a local business should anything come along.

When you enter a Kuiken Brothers Showroom you will not find a hard sell from our sales team. We are on-staff to provide a relaxing, consultative environment for you and your clients. We will guide you through our showroom and answer and questions you may have. Please visit us at your convenience. While appointments are not required, we do recommend that you contact us in advance so that we are able to provide you with a personalized experience.

We hope to see you soon, whether you are looking for inspiration for your dream project, or right in the middle of a project and need to make quick product decisions and selections. We hope to see you soon!

Find a Kuiken Brothers Millwork & Cabinetry Showroom Near You

Typical Showroom Hours*:

7am – 4pm Monday through Friday
8am – 12pm Saturday
Closed Sundays

Please feel free to call in advance to ensure a specific product that you are looking for is on display. Our showrooms are in close proximity to one another, so if one showroom does not have a specific product on display, chances are we can direct you to a local one that does. For a list of phone numbers, click here

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