Pella® Impervia® Fiberglass Casement Window
Pella Impervia fiberglass casement windows are hinged on the side and are made from our proprietary fiberglass, the strongest material for windows.32 Sleek profiles and clean lines deliver a timeless style. The revolutionary Easy-Slide Operator hardware solution allows you to simply slide to open your window without the effort of cranking.
- A variety of color options, including Black.
- Patented lock system engages multiple locks, with one easy-to-use lock-lever for lasting security.
- Low-maintenance and will never need to be repainted or refinished.
- Product #400003
Configuration: 1-wide
Pella Impervia Casement Window Features
Strongest Material for Windows 9
Patent-Pending Easy-Slide Operator Hardware
Enhanced Energy Efficiency
Design Options
Pella Impervia fiberglass products have a long-lasting factory powder-coat finish in your choice of three colors. Solid-color frames feature White, Black or Brown color on both the interior and exterior. Dual-color frames have White on the interior with Brown or Black on the exterior.
Solid-Color Frames
Black
Brown
White
Morning Sky Gray
Tan
Dual-Color Frames
White Interior with Brown Exterior
White Interior with Black Exterior
Material
- Pella Impervia products are made from our proprietary fiberglass material, the strongest material for windows, engineered for lasting durability.61
- Our long-lasting powder-coat finish meets AAMA 624, which is a highly-rated fiberglass coating.
- Exclusive thermoset material won't expand, warp or sag in summer heat, or shrink and turn brittle in harsh winter conditions.
- Secondary Secure Vent Lock for extra protection.
The Easy-Slide Operator is a revolutionary way to operate your casement and awning windows. Simply slide to open and close, without the effort of cranking. Or select the fold-away crank, that folds neatly away, against the window frame. Both solutions allow roomside window treatments to hang neatly in your room.
Easy-Slide Operator
Black
White
Brown
Tan
Morning Sky Gray
Fold-Away Crank
White
Matte Black
Brown
Satin Nickel (Upgraded finish)
Tan
Morning Sky Gray
Combinations
Join a window together with other windows to expand the opening, adding design interest to your home. Mulled windows are joined together in the factory by their frames. Select combinations are available for online purchase. Talk to a Pella sales representative for the complete offering.
Shop Online
Not Available for Online Purchase
2 wide over transom
Clad frame over 3-wide uneven
Unique Shapes
Combination Design Considerations
- Made just for your remodel or new construction project, unique and large factory-mulled assemblies help save time on the jobsite.
- Integral mullion, tight mullion, 1/2” structural mullion or 1” structural mullion with additional steel reinforcements.
- Residential and light commercial solutions designed and tested to ASTM E330 for structural test pressures up to 75PSF (DP50).
- Meet or exceed structural framing requirements of the International Building Code section 2403.3 for more demanding commercial casement and awning window applications.
- Ability to choose a solution based on project classification, including structural framing requirements for casement or awning specified projects.
Low-E Insulating Glass
Low-E glass has a coating that is applied to reflect heat and keep your home comfortable. It helps prevent your carpet, furniture and window treatments from fading by blocking most of the sun’s harmful UV rays.
Advanced Low-E Insulating Glass
AdvancedComfort Low-E Insulating Glass
NaturalSun Low-E with Argon
NaturalSun+ Low-E Insulating
SunDefense™ Low-E with Argon
SunDefense+ Low-E Insulating
Additional Glass Offerings
Pella Impervia windows are available with a variety of additional glass options. From insulating and tempered glass to sound control glass, we offer several options to meet your needs.
Tempered Glass
Laminated, Non-Impact Resistant Glass
Impact-Resistant Glass
Tinted Glass
Obscure Glass
STC (Sound Transmission Class)-Improved Sound Control Glass
Triple-Pane Glass
Flat Screens
InView
With high-transparency screens from Pella, you can increase the amount of natural light and airflow in your home. InView screens are a great choice for your home — they allow in 14% more light and are 8% more open than standard fiberglass screens.4
Grille Patterns
Grilles give the appearance of individual window panes. Pella offers many grille patterns to help enhance your home's architectural style.
Prairie
Traditional
Custom
No Grilles
Grille Profiles
Grilles-between-the-glass create the classic look of individual windowpanes.
3/4" Grilles-Between-the-Glass
Downloads & Specifications
Pella Impervia Casement Window Specs & Install Details
- Unmatched strength and lasting durability for proven performance and sleek style
- Tested and designed for the extremes
- Operable casement windows available in sizes up to 37-1/2” x 79-1/2”
- Fixed casement windows available in sizes up to 71-1/2” x 79-1/2”
- Performance class and grade LC40-LC50
Frame |
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Sash | Sash is Duracast fiberglass composite — five-layer pultruded fiberglass material, reinforced with a Pella patented interlocking mat. |
Glazing System |
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Dual Weatherstripping |
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Easy Slide Operator |
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Roto Operator Assembly |
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Awards and Certifications
Best Window & Door Product: Easy-Slide Operator
International Builders' Show, 2021
Best in Window & Door category for product innovation, functionality, design and consumer friendliness.
Best in Show: Easy-Slide Operator
International Builders' Show, 2021
Best product in the show, with over 200 entries in six categories.
People's Choice winner: Easy-Slide Operator
Azure Magazine, 2021
Selected as a favorite by the public in the Architectural Products category.
Fiberglass Window Tips & Advice
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- Unmatched strength and lasting durability9
- Exceptionally energy efficient
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