Pella® Impervia® Fiberglass Double-Hung Window
4.27
Mulled
Three Pella Impervia mulled double-hung windows are joined together in the factory and shipped as one unit. This creates a dramatic window opening in the home, increasing the size of a single window. Each window features two sashes that raise and lower independently for ventilation. These fiberglass windows are resistant to water, wind and outside noises — while delivering energy efficiency, security and ease of operation. The durable powder-coat finish resists chalking, fading and scratching.
- Three fiberglass double-hung windows combined as one in the factory.
- Commercial grade strength and performance.15
- Sashes tilt in so you can clean both the interior and exterior of the glass from inside your home.
Configuration: 3-wide
Free In-Home Consultation
Limited appointments available
Visit your Pella Showroom
There are no showrooms within 200 miles of this location.
Pella Impervia Double-Hung Window Features
Strongest Material for Windows 9
Enhanced Energy Efficiency
Design Options
Solid-Color Frames
Black
Brown
White
Morning Sky Gray
Tan
Downloads & Specifications
Design, Performance & Size Tables
2D Cross Section
2D Elevation
3D & BIM
Pella Impervia Double-Hung Window Specs & Install Details
- Timeless style and proven performance with unmatched strength and lasting durability
- Handles the most extreme heat and cold9
- Interlocking checkrail creates a barrier for air and water infiltration
- Double-hung windows available in sizes up to 47-1/2” x 79-1/2”
- Performance class and grade LC30-LC50
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| Sash | All sash members have mitered corners bonded with corner locks and sealed with injected polyurethane adhesive. |
| Weatherstripping |
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| Glazing System |
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| Hardware |
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| Additional Hardware options |
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Pella Impervia Reviews
Frequently Asked Questions
FAQs about My Product
Are fiberglass windows better than vinyl?
It depends what benefits are most important to you. Pella's fiberglass is the strongest material for windows, offering a low-maintenance and durable finish.9 If you're after a window that's tested to extremes, Pella's fiberglass windows are the way to go. Vinyl windows are easy to care for, energy efficient and budget friendly. Pella’s unique vinyl formula is performance-tested for excellent weathering, durability and color retention.
How long do fiberglass windows last?
There are many factors that affect the actual long-term performance, appearance and functionality of fiberglass windows, but Pella's fiberglass windows are designed for a lifetime of everyday use.
What is the difference between single-hung and double-hung windows?
The difference between single-hung and double-hung windows is the number of sashes that move. A single-hung window has one fixed, or non-operable, sash and one operable, or moveable, sash. A double-hung window has two operable, or moveable, sashes.
How do I clean a double-hung window?
When cleaning double-hung windows, tilting the sashes in makes it easy to clean exterior surfaces from the interior of your home. Clean the top sash first, starting with the exterior and followed by the interior, and then repeat the same process on the lower sash. Watch this step-by-step video to learn more about window washing for easy-clean double-hung windows.
FAQs about Purchasing Online
For online orders, what is your policy for returns and products damaged during shipping?
We’re committed to customer satisfaction. If the product you ordered online is damaged during shipping or you do not receive exactly what you ordered, we want to make it right by refunding you in full or sending you a new product. We do not accept returns of undamaged made-to-order products in which a buyer ordered the incorrect size or color, or decided the product was no longer needed. See pella.com/warranty for additional details and exclusions. If you have questions about returns and refunds, please email shop@pella.com.
Who will install the products I ordered?
When you receive your order, you can either install the product on your own with help from our installation kit. Or, hire a Pella Certified Contractor® to take care of installation for you. They are trained and certified to install Pella products.
How long will it take to receive my online order?
For online orders, a local Pella team member will call within 2-14 weeks to schedule pick up or delivery depending on delivery method and production timing. The time to receive your order varies since all products are made to order based on your specifics.
What’s included in my online window and door purchase?
Product only. When you purchase a window, door or replacement part online, your order will arrive with the product only. Installation is not included. If you need installation parts and accessories, those can be purchased online as well.
Pella Impervia
When it comes to performance, Pella Impervia is an overachiever. Windows with dual-pane glass offer energy-efficient options that will meet or exceed ENERGY STAR® guidelines in all 50 states.1 Further increase your energy efficiency with optional foam insulation.
With outstanding resistance to water, wind and outside noises while increasing energy-efficiency, security and ease of operation, Pella Impervia windows are an excellent choice for your home.
Pella Impervia Window Inspiration
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