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Marvin Replacement Arch and Round Top windows are arch-shaped fixed windows that add traditional character and additional sunlight to your home.


  • 20 round top shapes available

  • Available in custom sizes

  • Expands viewing areas

  • Additional curb appeal

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Get your project started by booking a free appointment with one of our design consultants.





Arch and round top windows fit perfectly with classically styled homes.



Arch and round top windows add elegance and character with curved design.


Low Maintenance

Our tough acrylic finish resists fading, dents, and cracks.

Exterior view of a bronze arch window.

Replacement Round Top Window Design Options

Replacement Round Top Window Styles

Marvin Replacement Round Top windows feature a variety of styles that impact the design of your home. Our round top windows elegantly break up the sharpness of straight lines and fit stylishly into areas to provide a bigger view, like a front door arch window.

Round top and arch windows come in 20 styles, including:

  • Eyebrow

  • Eyebrow Above Springline

  • Full Circle

  • Half Round

  • Half Round Above Springline

  • Quarter Eyebrow

  • Quarter Eyebrow Horizontal

  • Quarter Eyebrow Above Springline

  • Quarter Round Above Springline

Selected: Eyebrow

Example of a Marvin Replacement round top eyebrow window.
Marvin Replacement Eyebrow Above Springline Window
Marvin Replacement White Full Circle Window
Marvin Replacement White Half Round Window
Marvin Replacement Half Round Above Springline
Marvin Replacement white quarter eyebrow window
Marvin Replacement Horizontal Quarter Eyebrow Window
Marvin Replacement Quarter Eyebrow Above Springline
Marvin Replacement Quarter Round Window
Marvin Replacement Round Top Mull
Marvin Replacement Half Round over Casement
Marvin Replacement Half Round Over Picture
Marvin Replacement Round Top Picture Three Wide Mull
Example of a Marvin Replacement round top eyebrow window.


Round top windows can come as a round top double hung mull where a round top sits above a double hung window.

A half round can fit above a casement window for a half round over casement assembly.

A half round over picture assembly can place a half round window above a picture window.

A round top casement three-wide mull can have casement windows at each end and a picture window in the middle with a round top above it.

Exterior Colors

Our finish stands up to the elements, so much so that 48,000 hours of sun can't fade our finish* and our fade-resistant acrylic finish resists scratches, chalking, chipping, denting, and peeling. Choose from seven stunning exterior colors to boost your curb appeal.

Selected: Stone White

Stone white swatch
Sierra swatch
Cashmere swatch
Pebble Gray swatch
Bronze swatch
Bahama brown swatch
Ebony swatch
Exterior side of a Marvin Replacement Round Top window in a Stone White color finish.

Marvin's Ultrex® fiberglass finish is verified to the American Architectural Manufacturers Association (AAMA) 624 specification. Achieving AAMA 624 verification means that our Ultrex finish has passed rigorous tests that simulate the harsh conditions a finish can encounter throughout the life of a window or door.

*Average sunlight exposure per 10 years

Interior Colors

We use the same tough acrylic finish on our four interior color options that we use on our exterior colors. You can also choose our stainable EverWood® finish for the look of wood without the maintenance.

Selected: Stone White

Stone white swatch
Sierra swatch
EverWood finish sample
Bronze swatch
Ebony swatch
Interior side of a Marvin Replacement Round Top window with a Stone White color finish.

1. Bronze interior is only available with Bronze exterior

2. Ebony interior is only available with Ebony exterior

3. Sierra interior is not available with Ebony exterior

Finish samples are approximate. Schedule a design consultation for an up close view of color options.

Glass Coatings

Our experts will walk you through energy efficient glass options to find the right selection for your home and the best windows for your climate. Choose from four glass coatings, plus decorative glass options, and specialty glass choices.

Low E-1

Primarily used in colder climates, Low E1 allows more heat in to warm a room while blocking heat loss.

Low E-2

Low E2 offers year-round performance in moderate climates. It will help retain heat in your home during the winter and keep heat out during the summer.

Low E-3

Low E3 rejects solar heat while letting light in, resulting in increased performance in climates with intense sun exposure.

Low E-3/ERS

Low E3/ERS provides maximum efficiency year-round in all conditions.

Selected: Low E1

Diagram of Low E glass coating
Diagram of Low E2 glass coating
Diagram of glass with three metallic coatings.
Low E-3 ERS
Diagram of Low E glass coating

Decorative Glass

Decorative glass options are ideal for spaces like bathrooms to balance natural light and privacy.

Selected: Rain

Rain Glass
Glue Chip Glass
Narrow reed glass
Obscure Glass
Frost Glass
Marvin Replacement Reeded Decorative glass
Example of Marvin Replacement Gray Tint Decorative Glass
Sample of Marvin Replacement Green Tint Decorative Glass option.
Example of Marvin Replacement Bronze Tint Decorative Glass.
Rain Glass

Specialty Glass

Marvin Replacement offers specialty glass to best suit the needs of your home. You can choose tempered glass, laminated glass, and STC/OITC glass for specific windows and rooms.

Tempered Glass

Tempered glass increases glass strength to help prevent breakage. Tempered glass is ideal for windows close to the floor or located in high-traffic areas.

Laminated Glass

Even more durable than tempered glass, laminated glass is often referred to as impact resistant or safety glass due to its vinyl inter layer that tends to remain in place when shattered.


Sound Transmission Class and Outdoor-Indoor Transmission Class glass has increased pane thickness on the room side and works in areas where exterior noise is a concern.

Divided Lites

We offer various divided lite patterns so you can replicate the look of your original windows and doors. Or, add new architectural interest to your home. Choose from Simulated Divided Lites for classic appeal or Grilles-Between-the-Glass for easy cleaning.

Patterns include: Circle Dual Hub Six Spokes, Equal Rectangular, Half Round Above Springline Dual Hub Three Spokes, Half Round Above Springline Open Hub Three Spokes, Half Round Solid Hub Three Spokes, and Quarter Round Open Hub.

Selected: Grilles-Between-the-Glass

Cutaway of Marvin Replacement Grilles Between the Glass
Cutaway of a Marvin Replacement window with Simulated Divided Lites.
Circle Dual Hub Six Spokes
Marvin Replacement Round Top Equal-Rectangular
Marvin Replacement Half-Round Spoke Lites
Marvin Replacement Half-Round-Open-Hub
Marvin Replacement Half-Round-Solid-Hub
Marvin Replacement Quarter-Round-Open-Hub
Cutaway of Marvin Replacement Grilles Between the Glass


Since Round Top and Arch windows come as direct glaze windows, they do not require any maintenance for hardware or weatherstripping. You can clean them occasionally, and maintain the surfaces on the same schedule as your other windows.


Round top windows can add natural light and architectural interest to your home with arched windows. They fit perfectly above windows to create unique style for your home and break up straight lines. Round top windows are fixed windows glazed directly into the frame.

  • Marvin Replacement Double Hung windows have two sash in the frame that slide up and down. Enjoy a cool breeze through the bottom, while warm air escapes out the top.

    We know cleaning isn’t fun…but our easy tilt operation allows you to clean your window from inside your home.

    Marvin Replacement Double Hung windows are built with Ultrex® fiberglass to pair lasting performance with timeless design.

Frequently Asked Questions

What’s the difference between a round top and arch window?

Arch and round top windows can be used interchangeably to describe windows with a curve at the top. They’re inoperable windows and get installed above casement, double hung, single hung windows.

Which windows do round top windows look best on top of?

Arch and round top windows can get installed above several types of windows. Common assemblies include installing arch and round top windows above double hung and single hung windows, casement windows, and picture windows.

Can you open round top windows?

Round top and arch windows remain inoperable because they get direct glazed into the frame.

What is a Palladian window?

A Palladian window is large window with an arch window in the middle, flanked by two narrow rectangle windows. The windows take their name from 16th century architect Andrea Palladio, who included symmetry and proportional style.

Arch and Round Top Window Project Transformations

Added Assurance

Marvin Replacement windows and patio doors come with a limited lifetime warranty as well as a 5-year installation warranty to provide additional peace of mind.

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Marvin Replacement window installer places a window

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Fiberglass vs. Vinyl Windows

Schedule Your Free Consultation

Interior view of an opened Marvin Replacement bi-fold patio door.

If you’re ready to get started, discuss your replacement window and door options with a Marvin Replacement design consultant. We’re here to answer any questions you may have, and help make your project easy.

Schedule your consultation