Geometric & Radius


Ply Gem Aluminum Windows feature virtually maintenance-free extruded aluminum construction and a durable exterior finish. A sleek profile provides a larger viewing area.


  • Geometric and radius windows do not open and are typically used as half-rounds or arched transoms above windows or doors and as architectural accents

Project Type

New Construction / Remodel - First, you need to determine the size of the New Construction/Remodel window you want to install for your project. Then construct a framed "rough opening" that is sized to accept the window dimensions. Stated simply, the "opening fits the window."

Replacement - For a replacement project, the existing window sashes and balances need to be removed first. Then select a Replacement Window that is sized to fit inside the existing window frame. Stated simply, the "window fits the opening."

Energy Performance


Availability & Sizing

Interior & Exterior Colors



  • Matching interior/exterior

Grille Options

5/8" Flat GBG

Grille Patterns



Perimeter Prairie


Three Over Three

Three Over One

Two Over Two

Two Over One

Half Colonial

Glass Options



Frame Options

Nailing Fin

Block Frame


20-year glass warranty.*

*Refer to product warranty document for specific warranty terms and conditions.

Ready to place your Order?

See a millwork associate at your local store to learn more or place an order. Or, visit to see Ply Gem window products available in your local store.