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Pella® Defender Series™ Vinyl Sliding Window


Pella Defender Series sliding windows offer exceptional everyday performance and help protect your home against strong storms. Gliding open and closed along a roller system, these windows are a perfect option for areas that need easy operation. Pella Defender Series sliding windows are designed to work hard, so you don’t have to, with an exclusive vinyl formula and advanced glass technology.

Defender Series Sliding 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

  • Performance tested vinyl formula provides excellent weathering and durability
  • Advanced glass technology provides noise reduction and blocks nearly 100% of UV rays
  • Impact and laminated glass options available
  • Window hardware automatically locks when the window is closed

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 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 Sliding Window Specs & Install Details

  • Tested to withstand hurricane conditions while providing reliable, everyday performance
  • Available options tested and rated to be installed in coastal areas, including the Florida Building Code and Texas Department of Insurance
  • Installation holes pre-drilled into the frame for quicker installation
  • Sliding windows available in operable sizes up to 111" x 63"
  • Design pressure from +/-38 to +/-58
  • FL # 17355, 17793
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Product Downloads

Options for Pella Defender Series Windows

Choosing Your Window

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