Pella Impervia double-hung windows have two moveable sashes that provide ventilation throughout your home. Our low-maintenance fiberglass windows provide exceptional durability and can withstand some of the harshest conditions. With our durable powder-coat finish, your double-hung windows will look great for years — inside and out.
- Made with Pella's patented Duracast® fiberglass composite material.
- Operable sizes up to 3' 11-1/2" x 6' 5".
- Performance Grade up to PG50.
If the tinting contributes to a defect in the product, the defect would not be covered under the warranty.
Inside the Pella Impervia Series Window
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