Welcome to StyroTrim!

America's trusted brand of stucco & cement coated window & door trim
Made in USA
Beautiful Architectural Accents, Inside and Out.


Keystones accentuate an existing arch and create the illusion that your arch is supported by several stones balancing against one another.

"The keystones compliment the window trims perfectly".

William J. O'Connor, Midland, MI.

Angled Diamond Keystone

Starting at $36.30

Keystones With Wings

Starting at $36.30

Recessed Keystones

Starting at $29.70

Standard Keystone

Starting at $16.50