400 Series

Bay & Bow Windows

400 Series bay and bow windows feature all of the individual qualities of our Woodwright®, double-hung and casement windows. Each is delivered as a complete unit to help speed installation.

  • Available with casement windows in the following styles: 30° bay, 45° bay and 90° box bay; 10° bow
  • Available with double-hung windows in the following styles: 30° bay, 45° bay
  • Wood protected by vinyl or Fibrex® composite exterior

Stylish, Refined And Proven

Durable and time-tested

Available in both casement and double-hung styles

What’s It Made Of?

A vinyl exterior resists water and seals out the elements; the interior is trimmed in natural wood, which can be finished to enhance any decor.

Energy Efficiency

It’s built into every window. We have options to help you meet the performance level you need.

Available with Stormwatch® protection for coastal applications. For more information, contact your Andersen supplier.

Photo Gallery


Products: 400 Series Double-Hung Bay Window


Products: 400 Series Casement Bay Window
Hardware: Estate Hardware, Oil Rubbed Bronze Finish
Options: Colonial Grilles


Products: 400 Series Casement Bay Window
Hardware: Estate Hardware, Bright Brass Finish

More details

Info Sheet

Use this quick reference guide to learn about the available colors, finishes, glass, and hardware options for this product.

Series Brochure

View our 400 Series brochure online for an overview of options, accessories and performance details for this series

A Warranty You Can Trust

At Andersen, we pride ourselves in crafting durable, long-lasting products. That resilience allows us to offer some of the best warranties in the industry. They’re even transferable should you sell your home. With our exclusive Owner-to-Owner® limited warranties, you get peace of mind, plus real added value.

Technical Library

Browse our extensive technical library for performance ratings, installation guides, operation instructions and care and maintenance guides.

Replacement Parts

We believe so strongly in our products that we still offer parts for windows and doors built decades ago.


Learn about ENERGY STAR® and certification requirements where you live.

400 Series

Product Guide For Professionals

Created for trade professionals, product guides provide high-level overviews of the features and options available with each Andersen® product series.  Additionally, they include detailed information on the construction of each type of 400 Series window and door, along with sizing charts and section details. Product performance data is also included.