Essential Round Top Window

Essential® Round Top windows are available in quarter-round, half-round, and elliptical styles, offering design flexibility in low-maintenance fiberglass.

Material
Ultrex® Fiberglass Exterior and Interior
Exterior and Interior Finishes
6 Exterior Color Options | 4 Interior Color Options
Sizing
Standard and Special Sizes up to 8’ Wide or 7’ High

Marvin dealers provide
expert guidance and pricing

Design Options

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.

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

stone white
Stone White
cashmere
Cashmere
pebble gray
Pebble Gray
gunmetal
Gunmetal
bronze
Bronze
ebony
Ebony

The Ultrex® pultruded fiberglass interior in our Essential collection features a durable, low-maintenance finish in bronze, ebony, stone white, and gunmetal.

Ebony interior finish is only available with ebony exterior finish.
Gunmetal interior finish is only available with gunmetal exterior finish.
Bronze interior finish is only available with bronze exterior finish.

stone white
Stone White
gunmetal
Gunmetal
bronze
Bronze
ebony
Ebony

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.

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.

Color tint images represent color tint example only. Please inquire about obscure glass treatments separately.

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.

Bronze Tint
Gray Tint
Green Tint
Frosted
Glue Chip
Obscure
Rain

The look of multiple, individual panes of glass in a window panel is popular in a wide range of architectural styles. Grilles between the glass, available in a number of different styles, mimic the look of these individual panes of glass without sacrificing energy efficiency.

Grilles-between-the-Glass (GBGs)

Grilles are permanently installed between the glass panes for low-maintenance and easy cleaning. Choose from six exterior colors and four interior colors.

Grilles between the Glass (GBGs)
Grilles between the Glass (GBGs)
Patterns

Grilles between the glass are available in a selection of pre-designed patterns for added character. These are some of our most frequently-requested divided-lite patterns.

Sunburst divided lite swatch
Sunburst
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