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400 Series Casement Windows

Casement windows with bulb weatherstripping and seamless frame cover offer long-lasting protection and premium efficiency.

Energy Star certified to help you save energy

Choose Andersen’s best-selling casement window for a classic blend of engineering and craftsmanship. A wide array of options and accessories allow you to customize the window to your design needs.

Casement windows are a great option for ventilation and light. The single sash opens outward for top-to-bottom ventilation and creates unobstructed views when closed. 



Hardware Finishes

Hardware Styles

Additional Options

Exterior Trim

Exterior trim adds a finishing touch to your windows or doors and is often essential in achieving authentic architectural style. You can match the color of your windows or doors, or complement them with a different color.

Trim Colors

Trim Styles

Head Trim Profiles


Decorative and Specialty Glass

Safety Glass

Tempered safety glass is available on all products, and comes standard on all patio doors.

Sound-Reducing Glass

This glass helps reduce the volume of outside noise. Available with Low-E, SmartSun and HeatLock coatings.

Patterned Glass

Let in light while obscuring vision and adding a unique decorative touch to your home.

Art Glass

Grill Types

Grill Patterns


Conventional Insect Screen

Conventional insect screens have charcoal powder-coated aluminum screen mesh. Available with frames in White or Stone.


Exclusive Andersen TruScene® insect screens provide over 50% more clarity than our conventional insect screens for a beautiful unobstructed view. They allow more fresh air and sunlight in, while doing a better job of keeping out small insects.


WE bought these windows in the summer of 2018. Had them installed and saw a great improvement to the original 40-year-old double pane with storm. The blocked out a lot of radiated heat from the sun. No cold spots felt in the winter. 

— Joe & JoAnne, Review on

Product Specs

Custom Sizes
Yes, Available in custom sizes to fit most projects, including replacement.
Energy Star Certification
Measured in 1/8″ increments
NFRC Ratings
Interior Color
Pine, White, Dark Bronze, Black
Minimum Width
WDMA Hallmark Certification
Exterior Color
White, Canvas, Sandtone, Terratone, Forest Green, Dark Bronze, Black
Maximum Width
84 5/8″
AAMA Certification
Wood, Vinyl
Minimum Height”
24 1/8″
Glass Warranty
20 Years
Uniform Sight Lines
Maximum Height
71 7/8″
Glass Breakage Warranty
Extension Jambs
Standard jamb depth is 2 7/8″. Extensions jambs are available in unfinished pine or prefinished white. Some sizes may be veneered.
Jamb Depth
4 9/16″
Non-Glass Warranty
10 Years
Translucent Film
Sash Construction
Flexible bulb weatherstripping or vinyl closed-cell foam weatherstripping is factory installed on the perimeter of the sash.
Labor Warranty
Construction Type
Build, Remodel, Replace
Power Operator Available
Window Opening Control Device
Security Sensors
Yes. Verilock sensors are available in five colors. Wireless open/closed sensors are available in four colors.
Stormwatch Protection Available
Yes. Available for new construction windows only.