Pella® Impervia® Fiberglass Casement Window
Pella Impervia casement windows open and close with the turn of a crank. Create sleek designs featuring slim profiles and more visible glass with our exceptionally strong fiberglass. And with a durable powder-coat finish, Pella Impervia casement windows deliver a timeless, long-lasting look.
Impervia Window Features
- Optional foam insulation for better energy performance
- Exceptional energy efficiency
- Innovative locking system for improved security and a stronger seal
- Patented unison locking system, with one easy-to-use lock-lever
50% off qualifying installationsor0% APR for 48 monthsSee Details
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Inside Pella Impervia
Made from our patented five-layer fiberglass material, Pella Impervia windows are on average 100x more impact-resistant than a leading wood/plastic composite product.59 Tested from -40ºF to 180ºF, these windows can withstand some of the harshest conditions, making them strong and incredibly energy efficient.16
For the Pros
Pella Impervia Casement Window Installation and Product Specs
We've collected all the information building professionals need to know to save time on Pella Impervia installations. Find all of the information you will need to install a Pella Impervia casement window.
Choosing Your Window
Make a design statement with window combinations. Additional combinations are available. See your Pella sales representative for the complete offering.
Pella Impervia fiberglass products have a long-lasting factory powder-coat finish in your choice of five colors plus dual-color frame options. Learn more about interior finishes.
Styling Your Window
Pella's fold-away crank is available in today's most popular finishes.
Grilles give the appearance of individual window panes. Pella offers many grille patterns to help enhance your home's architectural style.
Grilles-between-the-glass create the classic look of individual windowpanes. Learn more about grille profiles.
Integrated Security Sensors
Stay connected to your windows.
Preserve beauty, add comfort and enhance home security with innovative Pella Insynctive® technology.
Protect what matters most. Monitor windows while at home or away with the Pella Insynctive App.40
Conventional Fiberglass Screens
Pella's high-transparency screens are made of a finer screen fabric than conventional screens for a clear view that allows more air and natural light to flow into your home.
Pella InView™ screens let in 14% more light and are 8% more open for improved airflow compared to conventional fiberglass screens.5