Skip to Content

Pella® Defender Series™ Vinyl Double-Hung Window


Pella Defender Series double-hung windows offer exceptional everyday performance and help protect against strong storms. With two movable sashes, double-hung windows provide exceptional ventilation, perfect for coastal homes. Tilt latches make it easy to clean the outside of your double-hung windows from inside your home.

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

  • Automatically locking hardware for added peace of mind
  • Advanced glass technology blocks nearly 100% of UV rays
  • Energy-efficient, impact and laminated glass options available
  • Precise-installation frame design

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.

Browse Other Pella Defender Series Products

Inside Pella Defender Series

Pella Defender Series windows are created to endure harsh weather conditions. Our exclusive vinyl formula uses high-grade resins and additives for excellent weathering, durability and color retention. And we test samples of our materials and components of our products by placing them in conditions to mimic the intensity of Florida’s sun, coastal salt spray and above average humidity.

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 Double-Hung Window Specs & Install Details

  • Simplified hurricane protection provides peace of mind while delivering everyday performance
  • Tested to withstand hurricane conditions and increasingly stringent coastal requirements, including the Florida Building Code and Texas Department of Insurance
  • Pre-drilled installation holes help keep projects and inspections on schedule
  • Double-hung windows available in operable sizes up to 53.125" x 76"
  • Design pressure from +/-45 to +/-58
  • FL # 17822, 17234, 17791, 18148
Request a Project Quote

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

Compare Double-Hung Windows



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

Learn more about Pella warranties