Wood-Ultrex Insert Double Hung

The Wood-Ultrex Insert Double Hung window’s frame-in-frame design is precision built to each unique window opening, allowing for a clean replacement without disturbing the existing interior or exterior trim. Rich wood interiors are complemented by Ultrex ® pultruded fiberglass exteriors and a wide array of options for superior performance and durability that blend seamlessly with any home design. With Performance Grade ratings of 35-40, this window is Built to Perform ® in the toughest replacement projects.


  • 3 1/4″ insert replacement frame with through-jamb installation.
  • 8 ̊ sloped sill for a traditional appearance.
  • Precision built in 1/64″ increments up to a stunning 4.5′ wide and 7′ tall.
  • Sash lift hardware available.
  • Dual operating sash open at top or bottom as well as tilt and remove for easy cleaning.

Get tough

Durable doesn’t begin to describe how tough Ultrex is. Strong, stable, and virtually indestructible, Ultrex is quite possibly the perfect building material, creating windows and doors that leave other materials in the dust.

Made from pultruded fiberglass, Ultrex outperforms the competition on nearly every measure. Non-conductive and non-corrosive, Ultrex resists the ravages of heat, cold, time and pressure to provide the most worry-free windows and doors available today.

Pioneered by Marvin ® , Ultrex has what it takes — from its durability and performance characteristics, to its first-to-market ingenuity — to create products of incomparable value.

Low-maintenance and high-durability. Everything you want your home to be, and everything that Ultrex delivers.

Stay true

Ultrex ® also stands up mightily to rain, wind, heat and time, looking beautiful and performing well long after other window and door materials have lost their luster.

The strength of Ultrex also translates into superior stability. Ultrex is more rigid than vinyl and vinyl/wood composites. So issues of instability and less-than-perfect alignment that can complicate installation — and long-term performance — are not a concern with Integrity ® windows and doors

The exceptional strength and stability of Ultrex eases installation and establishes a secure, long-lasting fit that stays square and true even under the most punishing conditions.

Built to Perform ®.
It’s more than our tagline, it is our promise to you. Ultrex is so resilient, it outperforms and outlasts vinyl and vinyl/wood composites, time and time again. Strong yet light, Ultrex provides sturdy, reliable support from top to bottom, end to end.


Eighty years of innovation and uncompromising product performance standards: that’s the legacy of Marvin Windows and Doors. And it’s why we build energy efficiency into every Integrity ® from Marvin product.

A history of integrity.
Marvin has a long history of product innovations, industry firsts and commitment to community. Integrity Windows and Doors takes pride in the fact that our corporation is green-minded with recycling efforts and employee awareness. In addition, we incorporate green components into our product packaging and even our distribution process.
Beyond that, being green is also about conserving energy — and Integrity is energy efficient. Not only are the products extremely durable, Integrity from Marvin was the first major window and door manufacturer to offer its ultra durable Ultrex ® energy-efficient Low E2 insulated glass with Argon and ENERGY STAR ® qualified performance on all of its standard windows and doors.
Today, Marvin is credited with several industry firsts and is recognized for innovative products
and uncompromising product performance standards. Third- and fourth-generation Marvin family members remain actively involved in the company and keep the original spirit of corporate responsibility alive today.
Superior performance you can feel good about.
At Integrity, sustainability is part of the manufacturing philosophy: make a product able to withstand the power of the great outdoors, while preserving the natural resources from which it was made.

  • Ultrex is made from silica sand, a safe and renewable natural resource.
  • The Ultrex manufacturing facility captures and destroys 95% of all VOCs.
  • The Ultrex manufacturing facility fully complies with the 1990 Clean Air Act and has been designated as a Maximum Achievable Control Technology (MACT) facility as outlined by the Environmental Protection Agency (EPA).
  • The glass in our products contains 15%–33% recycled content.
  • Integrity products offer ENERGY STAR qualified performance.
  • Even more green awards and information at integritywindows.com.

Shine on

Stellar energy performance ratings.
The NFRC defined an energy performance rating system for the entire window and door industry. It rates:

  • U-factor, or how well a window keeps heat inside a building.
  • Solar heat gain, or a window’s ability to block warming caused by sunlight.
  • Visible light transmittance, or how much light gets through a product.
  • Air leakage or heat loss and gain by infiltration through cracks in the window assembly.

Fortunately, Ultrex is far less conductive than aluminum and is similar to wood and to PVC. It provides an insulated barrier against extreme weather temperatures, keeping homes comfortable, and reducing heating and cooling costs.

The National Fenestration Rating Council, the Department of Energy, and the U.S. Environmental Protection Agency were all
impressed, so much so that Integrity ® Windows and Doors received one of the highest performance ratings.


Interior Finishes: Standard bare wood to stain or paint to match your interior; or a factory-applied white semi-gloss interior finish for reduced job site finishing time and labor.

Exterior Finishes: Stone White, Cashmere, Pebble Gray, Bronze, Evergreen or Ebony. All are paintable without affecting the durability.

Bare Wood (interior)

Pre-Finish White (interior)

Stone White (exterior)

Cashmere (exterior)

Pebble Gray (exterior)

Bronze (exterior)

Evergreen (exterior)

Ebony (exterior)

Divided Lites

Simulated Divided Lites: (SDL) Bars permanently adhered to both sides of the glass for a more authentic look. SDL is available with or without spacer bar and in several popular lite cut options. Finished to match your interior and exterior finish options.

Profiled Grilles-Between-the-Glass: (GBG) Offer all the style with no hassle by inserting the grille detail between the two glass panels. GBG are available in several popular lite cut options and features a white or bronze interior
with a Stone White, Pebble Gray, Cashmere, Bronze, Evergreen or Ebony exterior to match the exterior finish.

Wood Interior Grilles: (WIG) Feature easy removal for cleaning. Available in bare wood or factory applied white
pre-finish on interior or exterior.

Simulated Checkrail

A Simulated Checkrail is the perfect solution when aesthetics call for the beauty of a double hung, but operation, egress or performance demand another solution. You specify placement of the horizontal simulated checkrail bar, and the lite cut patterns above and below. These illustrations offer a sampling of 7 / 8 ” Simulated Divided Lite (SDL) patterns that can be selected in combination with the 2 11 / 32 ” Simulated Checkrail on Casement, Awning, Glider, Direct Glaze Rectangle and Picture units.


Energy efficiency, safety and privacy. Choose from Integrity ® Windows and Doors’ standard Low E2 insulated glass with Argon gas,** Low E1 or Low E3 with Argon gas. Both tempered insulated glass with Argon gas (standard on larger units and doors, and available on most other units); and obscure*** insulated glass with Argon gas are available in Low E1, Low E2 and Low E3.

Low E2 (Standard), Low E1 and Low E3 insulated glass with Argon gas**; available in tempered

Low E2 (Standard), Low E1 and Low E3 obscure insulated glass with Argon gas**

Variable thickness glass provides enhanced STC and OITC sound abatement perfor-mance. Available in Low E1, Low E2 or Low E3, tempered and obscure.

Tripane glass delivers superior energy efficiency. Available in a combination Low E2 and Low E1 configuration, tempered and obscure.

Hardware Finish Options

French Door handle sets offer two styles, keyed cylinders, multi-point locking systems and available PVD finishes for superior durability.** Select interior and exterior handle finish and optional keyed alike locking cylinders. Windows feature classic low-profile durable hardware for clean aesthetics, safety and security.

* Round Tops material is fiberglass reinforced composite material.
** Physical Vapor Deposition — highest grade corrosion resistance finish.


Almond Frost


Satin Nickel

Oil Rubbed Bronze