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Pella® Defender Series™ Vinyl Single-Hung Window


Pella Defender Series single-hung windows are engineered to protect your home from strong storms while providing excellent everyday performance. With one movable sash and one stationary sash, single-hung windows provide a classic look. Automatically locking hardware provides peace of mind and innovative, tilt sashes make it easy to clean the exterior glass from the inside of your home. Read on for more information about single-hung windows.

Defender Series Single-Hung Window Features

Why Vinyl?

  • Low-maintenance
  • Exceptional energy efficiency
  • Popular styles and options
  • Pella’s exclusive vinyl formula
  • Quality craftsmanship backed by Pella

Performance Enhancements

  • Simplified storm protection with impact-resistant glass
  • Automatically locking hardware
  • Advanced glass technology blocks nearly 100% of UV rays and reduces outside noise
  • Insulating air chambers for improved energy efficiency

Pella Defender Series

Pella Defender Series windows are always ready to handle the storm. Engineered to protect you and your home, our impact-resistant windows withstand hurricanes and increasingly stringent coastal requirements. You can count on these high-performance windows for excellent everyday performance.

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Inside Pella Defender Series

Pella Defender Series windows feature multichambered frames with insulating air chambers for exceptional energy efficiency. This intentional frame design helps keep your home comfortable, even in the warm Florida temperatures. Automatically locking hardware helps keep your home secure and thick vinyl walls add extra strength.

Cutaway of a defender series double-hung window

The Pella Difference

We do more than just create windows and doors. We test beyond industry requirements and innovate continuously to make beautifully designed products that you can be proud to own.

For the Pros

Pella Defender Series Single-Hung Window Specs & Install Details

  • Impact-resistant windows designed to weather the storm with reliable everyday energy and sound performance
  • Tested and certified to be installed in coastal areas, including the Florida Building Code and Texas Department of Insurance
  • Single-hung windows available in operable sizes up to 53.125" x 76"
  • Design pressure from +/-35 to +/-58
  • FL # 17235, 17792
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Product Downloads

Options for Pella Defender Series Windows

Choosing Your Window


Join a window together with other windows to add character to your home’s design. Additional combinations are available. 

Frame Color

Create a signature look with solid- or dual-color frames. Made with our performance-tested, exclusive vinyl formula, you won’t have to paint, stain or refinish your windows.


Styling Your Window


Automatically locking hardware comes standard on your single-hung windows. When you close the window, they automatically lock to help keep your home more secure.


Grille Patterns

Choose between different grille applications to add design interest to your home.


Grille Profiles

3/4" Contour

Window Enhancements


InView™ window screens let in 14% more light and are 8% more open for improved airflow compared to conventional screens.5

Inview Screen corner section

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Pella products are backed by some of the strongest warranties in the business.

Learn more about Pella warranties