Willoughby Remodeling Images



This windows offers the ultimate in design freedom, with eight unique shapes available from triangles to pentagons and more. Use Essential Specialty Shape windows as sidelights and transoms, or combine them to create a wall of fixed windows. Thanks to the strength and durability of fiberglass to the interior and exterior, Essential Specialty Shape windows can be ordered as large as 49 square feet for maximum sunlight paired with maximum performance.

Product Features:

  • Available in sizes as large as 49 square feet, with the longest leg being 9 feet
  • Eight shapes including rectangles, triangles, pentagons and octagons
  • Durable and low-maintenance material to the interior and exterior


Exterior Finish

A strong alternative to vinyl, our Ultrex pultruded fiberglass exterior finish is applied through a patented process to provide a superior, consistent finish. The American Architectural Manufacturers Association (AAMA) awards certifications to materials that pass numerous, rigorous tests. These tests simulate the harsh conditions that a finish will encounter throughout the life of the window or door. Passing these specification tests and achieving AAMA 624 verification gives independent verification that the Ultrex finish is best in class among fiberglass products.

Built for durability and low-maintenance, our Ultrex finish is 3x thicker than competitive finishes, with a smooth consistency and strong finish that resists fading, chalking, peeling and cracking, even in the darkest colors. If a design change calls for a new color down the road, our material can be painted without voiding our warranty. Six colors are available in neutral and dark tones.





Pebble Gray

Stone White

*Finish samples are approximate and colors on screen can vary. Visit your local retailer to see actual color samples.

Interior Finish

The Ultrex pultruded fiberglass interior in our Essential collection features a durable, low-maintenance finish in bronze, ebony, and stone white. Color-matched and neutral dark components are available with bronze and ebony interior finishes.



Stone White

*Bronze interior finish is only available with bronze exterior finish
**Ebony interior finish is only available with ebony exterior finish


A variety of decorative glass options are available to meet the unique needs of each project, and laminated glazing is also available in clear, bronze, gray, or green with tinted interlayers.

Bronze Tint

Gray Tint

Green Tint


Glue Chip

Obscure Tint


*Not all decorative glass is compatible with all products. Check with your dealer for a recommendation on which glass is right for your project. Images may not be an accurate representation.

Energy Efficiency

Glass is an important aspect for managing the energy efficiency of your home. Our standard glazing is dual pane: two panes of glass with Low E coatings and argon insulating gas. We offer variations to help meet climate and code requirements across the country, described in more detail on our glass page.

Specialty Glass Options

Our specialty glass options include glass for unique project needs like sound management (STC/OITC), high altitudes, Sea Turtle Conservation Codes and California fire zones. We also offer laminated glass in products designed specifically for hurricane zones.

Go Back
Close [x]