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Bay and Bow/

Elevate Bay and Bow Window

Marvin Elevate® Bay and Bow windows are dramatic assemblies that expand your space with elegance. A bay window is a group of three connected windows that extend out at an angle. A bow window is a series of windows connected to form a gentle outward curve.

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Material

Ultrex® fiberglass exterior with wood interior

Sizing

Bay — up to 7' wide by 6' high
Bow — up to 10' wide by 6' high

Colors

6 exterior color options

Bare Pine, Clear Coat, painted Black, or White interior options

Product Highlights

White living room interior with a three-unit white Marvin Elevate Casement Bay window.

Dynamic Impact

Bay and Bow windows create a stunning focal point that can transform a room with additional light and space.


Superior Strength

Be confident in the strength of Ultrex fiberglass, which is 8x stronger than vinyl and 3x stronger than wood/vinyl composites.


Rich Wood Interiors

Bare Pine interior can be stained to match your interiors or finished in the factory.


Virtually Maintenance Free

A proprietary AAMA-verified acrylic finish resists fading and scratches, even in darker colors.

Product Options


Interior


A product photo of a Marvin Elevate Bay window, interior view.

Interior

A product photo of a Marvin Elevate Bay window, interior view.

Interior

A product photo of a Marvin Elevate Bay window, exterior view.

Exterior

A product photo of a Marvin Elevate Bay window, exterior view.

Exterior

Elevate Bay Window

Select mull type

Both bay and bow windows are a stunning way to maximize views, daylight, and fresh air while creating a unique focal point for any room. While bay windows involve mulling three windows together to form an angular extension, bow windows typically are comprised of four, five or six windows mulled and arranged in a semicircle pattern. Both Elevate Bay and Bow windows include a window seat and headboard.


Elevate Bay Window

  • Three windows mulled together

  • Typical mulls combine two Double Hung or Casement windows with a center Picture window, but many operable and stationary configurations are available.

  • Creates an angular extension of your room

Elevate Bow Window

  • Comprised of four to six windows mulled together

  • Typical mulls combine center Picture windows with Double Hung or Casement windows on the side, but many operable and stationary configurations are available

  • Creates a rounded, semi-circle extension of your room

The Elevate Bow window is better suited for applications in larger rooms where more natural light is desired. Bay windows may be more suitable for rooms with less space, or where more targeted airflow is desired through operable windows.

Details + Features
Details + Features

Sizing

Varies by configuration (see Marvin Dealer for details)

Material

Ultrex® Fiberglass Exterior | Wood Interior

Standard Performance Ratings

Up to PG50 for air, water, and structural integrity

Energy Efficiency

Options to meet ENERGY STAR® throughout the United States


Specifications/Catalogs

Get Elevate product resources here, including manuals, specifications, warranty information, and catalog.

Architectural Detail Manuals
Elevate Casement and Awning - Architectural Detail Manual (ADM)Elevate Double Hung - Architectural Detail Manual (ADM)
Construction Specifications
Elevate Casement and Awning - Construction Specification (CSI Spec)Elevate Double Hung - Construction Specification (CSI Spec)
Elevate Collection Catalog
Marvin Limited Warranty
View All Tech Specs

Ultrex Fiberglass Exterior

Marvin Elevate products feature Ultrex fiberglass for superior durability and energy efficiency.

Holds shape up to 285° F

AAMA 624 verification

8x stronger than vinyl

Virtually maintenance free


Specialty Features


Superior Durability

Window exterior is made with Ultrex fiberglass, which offers superior strength and durability over vinyl and wood/vinyl composites.

Premium Finish

Acrylic finish is 3x thicker than competitive painted options​ and resists scratches, chipping, peeling, chalking, and fading, even in dark colors.

Thermal Performance

Low thermal conductivity rate of Ultrex fiberglass, combined with energy-efficient glass, including dual- and triple-pane glass options on windows.

Design Options
Design Options
Color + Finish

Exterior Colors

Choose from a range of rich, neutral color options.


Interior Finishes

Interior color options include factory-painted colors, clear coat, and bare Pine. A stainable wood surround is also available to match wood interiors.

Glass

A variety of decorative glass options are available. Glass is available with Standard Dual Pane or optional Triple Pane on select products. Available with Low E1, Low E2, Low E2/ERS, Low E3, and Low E3/ERS insulated glass with argon gas. Options include glazing for sound abatement (STC/OITC), high altitudes, and California fire zones.

Hardware Options

Hardware Styles

Elevate windows feature classic low-profile durable hardware for clean aesthetics, safety, and security.


Hardware Finishes

Hardware finish samples are approximate. Please visit your local Marvin dealer to see hardware finish samples.

Screens

Screens for the Elevate product line feature Marvin Bright View™ mesh — a fiberglass screen mesh that provides improved airflow and more natural light while keeping insects out. Bright View repels water and resists dirt and grime for a sharp, vivid view.

For cohesive curb appeal, all exterior screens are available in colors to match Ultrex fiberglass window and door exteriors.

Divided Lites

Types

The look of multiple, individual panes of glass in a window or door is a popular option. Choose Grilles-Between-the-Glass (GBG), Simulated Divided Lite (SDL), or Simulated Divided Lite with Spacer Bar (SDLS).


Patterns

Choose from a selection of pre-designed patterns for added character. These are examples of some of our most popular patterns.

Exterior Trim

Ultrex fiberglass exterior trim is available in several different styles and colors to match Elevate exterior finishes. Choose flat-style for a clean, simple look or brick mould-style for a more traditional aesthetic.

Design Files
Design Files

2D Elevations

2D Operating Details

Installation Information
Installation Information

Elevate windows are built for quick, easy installation.

Guides

Installation Guide
All Installation Guides


Nailing Fin

Pre-attached folding nailing fin and drip cap for easier installation.


Through Jamb

Available through jamb and installation bracket options.


Factory-Applied Jamb Extensions

Factory-applied jamb extensions save time and labor. We supply 4-⁹⁄₁₆", 6-⁹⁄₁₆", and 6-¹³⁄₁₆" jamb depth in bare wood, white, designer black, or clear interior finish.


Factory-Installed Screens

Factory-installed screens are a standard offering with operating windows. At no extra cost, we can ship your screens separately to reduce on-site damage prior to installation.


Corner Keys

Integral corner keys keeps window and door units square and corners sealed.


Custom Sizes

Custom sizes are available on windows and doors in ¹⁄₆₄" increments for the perfect fit every time.


Paintable Ultrex Exterior

The Ultrex fiberglass exterior is paintable, and it holds dark colors better than vinyl or vinyl/wood composites.


Factory-Mulled Assemblies Available

Standard factory mulling, reinforced factory mulling, or field mulling kits. The reinforced mull meets AAMA 450 specifications and performs up to PG50 on standard products.

Service + Replacement Parts
Service + Replacement Parts

Find information on Elevate product service, care, and replacement parts.


Manuals

Owners Manual


Helpful Links

Warranty
Care + Cleaning
Product Registration
Request Service
Get Replacement Parts

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Need project assistance? Answer a few questions to help us connect you to the right person.



Collection Resources

View All Elevate Tech Specs

Marvin Elevate Collection

Collection Catalog

Get key details on Elevate products, including color and finish options, sizing, hardware, and more.

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Marvin Elevate Collection catalog cover

Marvin Elevate Collection

Technical Specifications

Find technical data, including ordering factors, performance ratings and standards, certification and construction details.

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Elevate Collection Technical Specifications cover
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© 2026 Marvin

Company
CareersOur StoryIn The NewsInfinity By MarvinInfinity ReplacementTruStile
Support + Resources
Support CenterFor ProfessionalsTechnical SpecificationsEnergy DataProduct LiteratureGlossary of TermsWarrantiesCare and Maintenance
Where to Buy
Find a DealerInternational DealersReplacement Solutions
Email Sign Up
Privacy StatementTerms of UseCalifornia Users/Privacy

© 2026 Marvin