.sash-Dropdown:hover .sash-DropdownTrigger, .sash-Dropdown:focus-within .sash-DropdownTrigger { border-bottom-color: --var(--tw-color-primary) } .sash-Dropdown:hover .sash-DropdownContent, .sash-Dropdown:focus-within .sash-DropdownContent { display: block; } .navTabs li:hover > div, .navTabs li:focus-within > div { display: block; }

- Windows
- Shop Online or by Appointment
  Casement
  Hinged at the side and swing outward.
  Shop
  Learn
  Awning
  Hinged at the top and swing out from the bottom.
  Shop
  Learn
  Double-Hung
  Two sashes capable of sliding up and down.
  Shop
  Learn
  Single-Hung
  Slides up from the bottom, while the top sash stays stationary.
  Shop
  Learn
  Picture
  Fixed frames that do not operate.
  Shop
  Learn
  Sliding
  Open horizontally, gliding on a track from one side to the other.
  Shop
  Learn
- Available by Appointment Only
  Custom
  Made-to-order windows not found in the standard offering.
  Learn
  Pass Through
  Slides, folds or pushes open to pass items between spaces.
  Learn
  Bay
  Fixed and operable windows form a curve that extends out from a home’s exterior.
  Learn
  Bow
  Four or more windows, each the same size and shape, joined to form a smooth curve.
  Learn
- Pre-Built Windows and Parts
  Stock Inventory
  Shop
  Screens, Parts & Accessories
  Shop
- Shop All Windows
- - - Window Inspiration
    - By Color
    - By Style
    - By Room
    - By Shape
    - All Window Inspiration
  - - Window Resources
    - Tips & Advice
    - Window Replacement
    - Window Before & After Projects
    - Window Ratings & Reviews
    - Window Features & Options
    - Window DIY
- Get Started
- Doors
- - Patio Doors
  - Shop Online or by Appointment
    Hinged or French Patio Doors
    1 or 2 doors that swing in or out.
    Shop
    Learn
    Sliding Patio Doors
    Panels of glass that slide open horizontally.
    Shop
    Learn
  - Available by Appointment Only
    Bifold Patio Door
    Expansive panels of glass that fold like an accordion.
    Shop
    Learn
    Multi-Slide Patio Door
    3 or more panels that glide open horizontally and stack.
    Shop
    Learn
  - Shop Parts
    Replacement Parts
    Shop
  - Shop All Patio Doors
  - - - Patio Door Inspiration
      - By Color
      - By Style
      - By Room
      - All Patio Door Inspiration
    - - Patio Door Resources
      - Patio Door Tips & Advice
      - Patio Door Replacement
      - Patio Door Before & After
      - Patio Door Ratings & Reviews
      - Patio Door Features & Options
      - Patio Door DIY
  - Get Started
    - Start Your Patio Door Education
    - 2025 Window & Door Design Trends
- - Front Doors
  - Shop Online or By Appointment
    Fiberglass Door with Glass
    Shop
    Learn
    Solid Fiberglass Door
    Shop
    Learn
  - Available by Appointment Only
    Wood Door with Glass
    Learn
    Solid Steel
    Shop
    Learn
  - Shop Parts
    Replacement Parts
    Shop
  - Shop All Front Doors
  - - - Shop By Material
      - Wood
      - Fiberglass
      - Steel
  - - - Front Door Inspiration
      - By Color
      - By Style
    - - Front Door Resources
      - Front Door Tips & Advice
      - Front Door Replacement
      - Front Door Before & After
      - Front Door Features & Options
      - Front Door DIY
  - Get Started
    - Start Your Front Door Education
    - 2025 Window & Door Design Trends
- Storm Doors
Where to Buy
- For Pros
- For Professionals
- Plan Your Project
- Tools & Resources
- - Product Downloads
    Find product design and performance information, BIM files and architectural specifications as you explore our windows, patio doors and entry doors.
  - Commercial Projects
    See our commercial capabilities in new construction and remodel case studies. We offer a variety of windows and doors to meet your high-performance standards.
    Commercial Projects
    Residential Projects
Free Consultation

Home
Shop
Windows
Pella® Lifestyle Series
Pella® Lifestyle Series Casement Window

Pella® Lifestyle Series Wood Casement Window

Mulled

Pella Lifestyle Series mulled casement windows include two casement windows of the same size. Mulling means that the two windows are attached together, creating a beautiful window opening larger than a single unit. Both casement windows open and close with the simple turn of a crank, making them especially convenient in tough-to-reach places. Personalize the look of your windows with grilles, finishes, hardware and more to create a style you love. These wood windows are built for everyday life and available with upgraded performance packages to make your home quieter and more comfortable.

Two wood casement windows joined together by their frames in the factory.
#1 performing wood window for the combination of energy, sound and value¹⁶
Available with built-in blinds, integrated shades, retractable screen and security sensors.

Product #301003

Configuration: 2-wide

Talk to a Pella Rep for Pricing

Contact a Pella Rep

Pella® Lifestyle Series Casement Window Features

Optimized Energy and Sound Solutions
Built-In Blinds and Shades
The Best Limited Lifetime Warranty for Wood Windows¹⁹

Design Options

Prefinished Stains

Pella wood products can arrive factory prefinished in your choice of a variety of paints and stains. Primed ready-to-paint interiors are also available.

Golden Oak
Provincial
Black
Early American
Natural

Extruded Aluminum-Clad Exteriors

All wood sliding patio doors are available with extruded aluminum-clad exteriors for exceptional durability.
Extruded aluminum-clad wood products are available with Pella's high performance EnduraClad® protective finishes to help keep your vision fresh and crisp for years.
Durable, low-maintenance EnduraClad aluminum cladding with EnduraClad protective finish for most projects where resistance to fading, chalking, chemicals and abrasion is needed. Meets the performance requirements of AAMA 2603.
Seacoast EnduraClad protective finish for coastal projects with high salt exposure

Available Performance Packages

To make things easier, we’ve created performance packages that highlight what’s most important to you. Upgrade from a dual- to a triple-pane glass design with the packages below to meet the unique needs of each room in your home.

Performance

Featuring a triple-pane glass design for a combination of both improved energy efficiency and sound performance, this package helps create a more comfortable home. This package is a good option for rooms that are frequently used.

Energy Efficiency

This package features a triple-pane glass design with upgraded AdvancedComfort Low-E glass for enhanced energy efficiency. Your home stays even warmer in the winter and cooler in the summer, so you can feel comfortable year-round.

Sound Control

With a triple-pane glass design featuring mixed glass thicknesses for enhanced sound dampening, this glass helps disrupt sound waves for a quieter home and more calming space. This is the perfect option for nurseries and bedrooms.

Ultimate Performance

For our best combination of energy and sound performance, this package features AdvancedComfort Low-E triple-pane glass and mixed glass thicknesses. This helps create an even quieter and more comfortable home, no matter where you live.

Performance Packages

We created performance packages that are optimized

to help your customers find the right option for their home. The packages are focused on improving the window’s STC rating and energy efficiency, creating a more comfortable home for your client.

The Performance package is 71% more energy efficient and reduce noise by 34%.^{17, 18}
The Sound Control package reduces noise by 52%.¹⁸
The Energy Efficiency package is 83% more energy efficient.¹⁷
The Ultimate Performance package is 79% more energy efficient and reduces noise by 52%.^{17, 18}

All values above are averages compared with single-pane windows.

To learn more about STC windows, read our guide on how to choose soundproof windows for your home.

Downloads & Specifications

Design, Performance & Size Tables

Complete Product Information

Specifications

2D Cross Section

Product Literature

Pella Lifestyle Series Casement Window Specs & Install Details

#1 performing wood window for the combination of energy, sound and value¹⁶
Performance rating of R20-CW50 and STC of 31-37 with optional triple-pane glazing
Dual-pane and triple-pane casements available in operable sizes up to 35" x 73"; non-venting options also available
Available with integrated wireless security sensors and integrated blinds or shades, with or without motorization
Installation options include Fold-out Fin, Block Frame, and EnduraClad Exterior Trim/Brickmould

Performance - Dual-Pane Glazing	Water Resistance 6.06 - 14.62 psf Design Pressure 30 - 50 psf Meets or Exceeds AAMA/WDMA Ratings LC30 - LC50 (Hallmark Certified)
Casement Glass Formulas - Dual-Pane	Visible Glass - Width = Frame - 4.92", Height = Frame - 4.92" Actual Glass - Width = Frame - 4", Height = Frame - 4"
Glazing System - Dual-Pane	Quality float glass complying with ASTM C 1036 High altitude glazing available Silicone-glazed 11/16" dual-seal insulating glass
Frame	Select softwood, immersion treated with Pella’s EnduraGuard® wood protection formula in accordance with WDMA I.S.-4. Interior exposed surfaces are clear pine. Overall frame depth is 5" (127mm) for a wall depth of 3-11/16" (94mm).

Performance - Triple-Pane Glazing	Water Resistance 7.5 psf Design Pressure 20 - 50 psf Meets or Exceeds AAMA/WDMA Ratings R20 - LC50 (Hallmark Certified)
Casement Glass Formulas - Triple-Pane	Visible Glass - Width = Frame - 5.938", Height = Frame - 5.938" Actual Glass - Width = Frame - 5", Height = Frame - 5"
Glazing System - Triple-Pane	Exterior silicone-glazed 11/16" dual-seal insulating glass Interior hinged glass panel set in a frame finished to match interior, fitted to sash with continuous gasket seal, clear glass. Airspace between insulating glass and hinge glass panel is 1-1/32".
Weatherstripping	Flexible santoprene material compressed between frame and sash for positive seal on all four sides. Secondary thermoplastic vulcanizate (TPV) weatherstrip between edge of sash and frame (Dual-Pane: leaf-type on the vertical sides and bottom side, and Santoprene® bulb-type weatherstrip on the top side; Triple-Pane: leaf-type on all four sides)

Pella Lifestyle Awards

Looking for the ENERGY STAR® label is a simple way to save you money and protect the environment.
To aid consumers in making the right choice when selecting window coverings, cordless options can easily be identified by the new Best for Kids™ certification program.
The PFWBS Seal of Approval Testing Program was created in 2005 to help consumers identify which products are best for kids.

Frequently Asked Questions

FAQs about My Product

Are triple-pane windows worth it?

What are clad windows?

Where is a casement window used?

Do casement windows have screens?

FAQs about Purchasing Online

For online orders, what is your policy for returns and products damaged during shipping?

Who will install the products I ordered?

How long will it take to receive my online order?

What’s included in my online window and door purchase?

Who should buy online?

See All Window FAQs

Other Lifestyle Series Products

Compare Casement Windows

Pella® Lifestyle Series
- Wood
- Exceptionally energy efficient
- Better noise reduction
Explore Product
Pella® Reserve™ - Traditional
- Wood
- Historical Authenticity
- 20 Exterior Colors
Explore Product
Pella® Reserve™ - Contemporary
- Wood
- Industry-Defining & Modern
- 20 Exterior Colors
Explore Product
Pella® Impervia®
- Fiberglass
- Unmatched strength and lasting durability⁹
- Exceptionally energy efficient
Explore Product
Pella® 250 Series
- Vinyl
- Stronger, more durable frames than ordinary vinyl⁸
- Enhanced security and privacy
Explore Product
Pella® Hurricane Shield Series™
- Vinyl
- Exceptional everyday performance
- Engineered for precise installation
Explore Products