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Pella^® ProLine 450 Series Casement Window
(Pella^® ProLine 450)

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Features

Pella's most popular styles, sizes, features, and options.
Three distinctive grille types for the look of individual windowpanes
Pella wood craftsmanship at a competitive price
Fold-away handle won’t get in the way

VIEW ALL WINDOW OPTIONS >>

Where to Buy

Sizes

Replacing, remodeling or building a new home? Pella offers a variety of sizes to fit most any project. Choose from a wide range of standard sizes or we can build products to fit your specifications.

Built to order in 1/4" increments for a precise fit.

View Pella ProLine Casement Window Size Chart

Need help figuring out the size you need?
Contact Pella »

Brochure

View Digital Brochure »

Pricing

The cost of each window or door can vary significantly based on many factors, such as your choice of size, frame material, glass type, finish options, etc.

Learn about costs »

Warranty

Pella products are backed by some of the best warranties in the business.

Installation

The best-performing windows and doors are only as good as their installation.

Energy Performance

Pella products offer the energy-efficient options that will meet or exceed ENERGY STAR^® guidelines in all 50 states.¹

Pella’s InsulShield^® energy-saving technology can make a major difference in your home’s comfort and energy use.

View NFRC Energy Ratings for All Glass Types

Pella Design Tool

You can design and visualize this window right now on your computer screen.

Start designing your window

Pella^® ProLine 450 Series Casement Window
Options

Interior Finishes

Pella wood products can arrive factory-prefinished in your choice of eight beautiful stain colors or three paint colors. Primed, ready-to-paint interiors are also available.² More Details »

Prefinished Paint- White

Exterior Finishes

Low-maintenance EnduraClad^® aluminum exteriors don’t need painting; they resist fading and chalking and protect your windows for years. More Details »

Black

Grille Patterns

Grilles give the appearance of individual window panes. Pella offers many grille patterns to help enhance your home’s architectural style.

Cross

Grille Profiles

For the classic look of individual windowpanes, choose Grilles-Between-the-Glass, Removable Roomside Wood Grilles and Simulated-Divided-Light Grilles More Details »

Grilles-Between-the-Glass

Grilles are permanently sealed between the panes of insulating glass.

Removable Roomside Wood Grilles

Attached to the inside of your windows with latches. They can be removed to make cleaning the window glass easier.

Simulated-Divided-Light Grilles

Permanently bonded to the inside and outside of your window glass. There is no spacer between the grilles.

Hardware

Pella's Fold-away crank is available in today's most popular finishes.

Style

Finish

Screens³

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. And, they’re practically invisible from the street so they enhance your home’s curb appeal.

Pella Vivid View^® screens truly bring the outdoors in with 29% more light and 21% more airflow.⁴
Pella InView^TM screens let in 14% more light and 8% more airflow than conventional fiberglass screens.⁴

Glass Options

Insulshield Glass Collection⁵

Pella's InsulShield^® glass collection offers our most innovative and energy-saving choices for your climate. More Details »

Advanced Low-E Insulating Glass
with Argon⁶

Best Use:
Keeps more heat out in summer, more heat in during winter.

Fade Protection: Blocks up to 86% of UV rays.
Double-pane glass available.

SunDefense Low-E Insulating Glass with Argon⁶

Best Use:
Homes or rooms that receive a lot of sun exposure.

Fade Protection: Blocks up to 95% of sun’s UV rays
Double-pane glass available.

NaturalSun Low-E Insulating Glass with Argon⁶

Best Use:
Insulates from cold, while allowing the sun’s heat to flow in.

Double-pane glass available.

NOTE: Pella also offers obscure , tinted and laminated glass options. See your local Pella sales representative for more details.

Factory-Assembled Combinations

Join a window together with other windows to add character to your home's design. Additional combinations are available. See your Pella sales representative for the complete offering.

¹Some Pella products may not meet ENERGY STAR guidelines in Canada. For more information, contact your local Pella sales representative or go to energystar.gc.ca.

²Available on pine products only.

³Warning: Use caution when children or pets are around open windows and doors. Screens are not designed to retain children or pets.

⁴Screen cloth airflow is based on calculated screen cloth openness. Screen cloth transmittance was measured using an integrated sphere spectrophotometer.

⁵Glass options can be upgraded to offer the benefits of our InsulShield glass collection. Glass options may vary by product.

⁶Optional high-altitude Low-E insulating glass does not contain argon in most products. Please see your local Pella sales representative for more information.