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Get detailed information on the Essential collection including types of windows and doors, color and finish options, sizing, hardware, and other key details.
Essential Round Top
The Essential™ Round Top window offers visual versatility and can complement other windows in the Essential Collection. Simple lines, expansive sizing, and streamlined design options add character to your home.
- Durable and low-maintenance glass-reinforced composite material
- Standard or special sizes available up to 8' wide and up to 7' high depending on the shape
- Available in half-round and elliptical shapes
Find Marvin products in your area and request a price quote. Connect with a dealer near you to get started.
Additional Features:
- Constructed of a glass-reinforced composite capped with proprietary acrylic finish
- Available nailing fin, installation bracket, and through jamb installation
- Perforated folding radius nailing fin provides for simple installation and proper water management
- Available factory and field mulling options
- Up to PG50 performance rating
Design Options
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Exterior Finish
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.
Selected:
*Finish samples are approximate and colors on screen can vary. Visit your local dealer to see actual color samples.
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Interior Finish
Interior Finish
The Ultrex® pultruded fiberglass interior in our Essential collection features a durable, low-maintenance finish in bronze, ebony, stone white, and gunmetal. Color-matched and neutral dark components are available with ebony, gunmetal and bronze interior finishes.
Selected:
*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
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Glass
Decorative Glass
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.Selected:
*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.
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Divided Lites
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 6 exterior colors and 3 interior colors.
Patterns
Grilles between the glass are available in a selection of pre-designed patterns for added character.Selected:
*These are some of our most frequently-requested divided-lite patterns.
Energy Efficiency
Options that help achieve long-term performance and cost savings, in any climate.
For the Pros
Find technical documents for this product, including installation instructions, sizes and elevations, 3D drawings, architectural detail manuals and more.
Marvin experts are experienced in working with architects, builders and homeowners to ensure your vision becomes a reality.