Our Window Replacement Services: Serving New Jersey, Philadelphia, Pennsylvania & Delaware

  • 0% interest financing
  • No high pressure salespeople
  • Service warranties

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What is it that you would like to see with your window replacement project? Maintenance freedom? Money saving insulation and greater comfort? Stronger materials and fabrication that can truly last a lifetime? Windows that always operate correctly? Unique colors and styles? Imagine having all of these needs met in one of the most technically advanced windows manufactured today.

For over 20 years, our engineers have been applying a homeowner-focused design process for all of our products. Our goal is to manufacture windows that meet the expectations and unique needs of all our customers. Starmark Evo, our newest window, is beautifully crafted with Advanced Polymeric Composite (APC) that was created for the specific needs of the windows industry. Starmark Evo has elevated the industry standards with superior permanence and a durability guarantee that will ensure a lifetime of comfort for your family.

Starmark EVO 


The Starmark Evo Window Series provides a truly unique product

in today’s crowded window marketplace. Starmark Evo offers elegant modern design inspired by best colonial windows. The secret behind great demand for this window is not only beauty, but also outstanding thermal and structural performance. Our window exceeds the most rigorous Energy Star Requirements. 

Starmark Evo Advantage

The Starmark Evo Window Series provides a truly unique product in today’s crowded window marketplace. Starmark Evo offers outstanding features and benefits to set this series apart from the competition.

Precise Engineering

Advanced Polymeric Composite (APC)

 Double Hung is the most ubiquitous window in the USA. Why is our window better than those manufactured by other companies? First, the amazing material, APC, allows us to make solid sashes and frames, which do not require additional insulation. The windows have rigid, extruded interlocks at the meeting rail that provide a tighter seal to minimize draft.

Engineering Excellence  – AMMA Certification

Third-party certification is very important for the homeowner when selecting a new window. Independent certification programs  can free the homeowner from the time-consuming process of determining the credibility of a manufacturer’s claim and subsequent product performance.

Since 1962, American Architectural Manufacturers Association (AAMA) Product Certification, the original third-party window performance program, has provided manufacturers with the means to independently demonstrate product performance to their customers. The AAMA Certification Label (Gold Label) tells customers that a sample of the product has been verified as conforming to the standards’ requirements through independent laboratory testing and follow-up on-site inspection of the manufacturer’s production line. Products authorized for certification and their manufacturers are also listed in the online AAMA Certified Products Directory, the industry’s preeminent resource for window and door products.


OKNA Windows & Doors has built an industry reputation by combining state of the art equipment, advanced technologies, and dedicated craftsmanship.

Our name has become synonymous with innovation, quality, and performance. Advanced automated equipment and computer-controlled production lines ensure a high standard of quality control as well as the ability to meet large volume requirements quickly.


ECO – PRO 600 Series

The Eco-Pro combines superb craftsmanship with a classic feel.  This Series offers many glass and hardware options to seamlessly blend with any interior design while providing superior energy efficiency. Since all OKNA products are custom-made, you can be sure of a perfect fit every time.

Exceptional Energy Savings

Double Hung: Eco Pro 600

  • Maintenance free rigid multi-chamber vinyl profile
  • Full 3 1/4″ depth uPVC fusion welded frame and sashes with beveled colonial exterior features curves that are not only beautiful, but also allow for maximum weld surface resulting in superior strength and years of long lasting performance.
  • HeatSeal warm edge spacer system for excellent thermal efficiency and drastic reduction in the possibility of condensation on the inside of the window. 
  • Full integral interlock with triple weather-stripping.
  • Insulated extra-strength glass increases strength and sound reduction.
  • A variety of hardware options fits harmoniously into any decor
  • Power lift balance system allows smooth window operation.
  • Fiberglass mesh half screens standard on all windows. 
  • Optional locking screen provides an additional safety measure. 
  • Available in replacement and new construction applications.


windows in a living room

Marvin makes it easy to complement any project or design with an array of high-quality standard wood options, including Pine, Cherry, Douglas Fir, Mahogany, Vertical Grain Douglas Fir and White Oak. And if your project requires the one-of-a-kind look of an unusual wood species, Marvin offers many beautiful and unique species including Maple, Black Walnut and Western Red Cedar.

Marvin Family of Brands is committed to environmentally responsible forest management. Marvin products are available with chain-of-custody certification for FSC certified wood. All species are available FSC-certified, including Mahogany.

Integrity Windows and Doors was born from The Marvin Companies’ century-long heritage of service, craftsmanship, and quality with a focus on all-out performance. We’re proud to manufacture the most innovative fiberglass windows and doors on the market, backed by top-notch customer support and incomparable value.

We build windows and doors with Ultrex® pultruded fiberglass exteriors paired with either rich wood or Ultrex fiberglass interiors for a long lasting, virtually maintenance-free window and door solution. Every Integrity product is available with a wide variety of options to suit your home’s design, including energy-efficiency solutions for every climate. Every window and door is made specifically for your order and delivered to your local distributor in an industry-leading 10 days.

Our values and work ethic are forged by the communities where we’re proud to live and work. When you choose Integrity windows and doors, you support a small-town, family-owned and operated company with deep roots in the community; some Marvin employees are fourth-generation, following the family tradition. We share profits with our employees; we support our communities; we treat our dealers and customers fairly and with respect. That’s Integrity.

How Can We Help Improve Your Home?