Bay & Bow Windows in St. Louis

Window World Bay and Bow Windows allow maximum natural light into your home making it feel more open, welcoming, and warm.

Natural Light Opens Your Living Space
Bring The Outside In
Product Details
Color Options

Our replacement bay & bow windows provide curb appeal and energy efficiency for years to come. Learn more about the features below:

  • Extruded vinyl frames and sashes to help increase energy efficiency
  • An expanded view to bring additional light into your home
  • Multi-channel design adds extra insulation to keep temperature-controlled air inside your home
  • Offer a larger viewing area than most windows provide
  • Constructed with 100% virgin vinyl (PVC) that never peel, crack, chip, or warp
  • Slimline reinforced mullion design for superior strength

Bay and bow window colors to meet your specific taste.

Window Color Options

*Color options may vary based on package, dimensions and more.


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What is energy efficiency?

Energy-Efficient Windows

Your windows, especially large windows like bay and bow, play a big part in your home’s energy performance. Learn about the benefits of upgrading to energy-efficient products here.

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Your Questions, Answered

Bay & Bow Windows FAQs

What are bay and bow windows?

Bay and bow windows add classic style to any home. These styles protrude from the exterior wall of your home, creating a 3-D arc effect on the outside and opening your home up on the inside. Bay windows have 3 glass panels while bow windows may have 4-6.

What is the difference between bay windows and bow windows?

The main difference is the size and number of window panes in the configuration.

Bay windows feature either a three-pane or box design, typically with one “picture window” in the center and a smaller window pane on either side.

Bow windows are a similar structure but are made of four to six panes of angled glass in the same size.

Each bay and bow window is custom-made to perfectly fit the open space in your home and give it a one-of-a-kind look. Their dimensionality creates a dramatic new look for your interior, perfect for a reading area or breakfast nook.

What are the benefits of bow and bay windows?

Besides bringing natural light into your home, bay and bow windows can boast these benefits:

  • Incredibly strong with a slimline design
  • 3″ pre-insulated seatboard option helps increase energy savings
  • Color-coordinated, maintenance-free interior laminate surface
  • Available in double-hung, casement and fixed lite styles

Are bay and bow windows energy efficient?

Yes. All of our bay and bow windows are designed to insulate your home for maximum energy efficiency. You will enjoy lower energy bills and a more comfortable living area after installing our specially-designed products.

How are bay windows constructed?

Bay windows are composed of three windows that come together to form a single complete unit. The middle window is often a fixed, picture window that allows for a wide, unobstructed view. The windows on either side are typically double-hung or casement style windows that can be opened and closed for ventilation.

How can you decorate a bay window?

Bay windows offer the opportunity for a wide range of design elements and unique styles. That being said curtains are the most popular and arguably the best-suited window treatment for bay windows.

How can you decorate a bay window ledge?

Bay and bow windows offer a wide ledge that is ripe for decoration. The opportunities are endless, but some common decor elements include decorative pillows and cushions, plants, candles, lamps, and more!

5-Star Google Ratings

What Your Neighbors Are Saying

We are very happy with our windows. They are beautiful. The 2 gentlemen that installed them were incredible at their job. They are very hard workers and very polite. They did a superb job. Very happy we went with your company. Will recommend
Alona C.
Window World was amazing! Their prices can’t be beat, and all the way from the sales rep to the install had no issues! I was extremely impressed by the installs promptness, cleanliness as well as consistently working through the install! The weather was a bit cold but the 3 men who were on the install team worked very well together and there wasn’t any debris or mess left behind!
Diane S.
The guys that did the install are amazing! So nice and did a great job of answering my questions. I just can not say enough good things about the install. The windows are beautiful and have really changed the view both inside and out!
Karen H.

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