fiberframe replacement fiberglass windows

About Us

Your Home is Our Vision

FiberFrame windows, doors, and sunrooms are manufactured by Comfort Line Ltd of Toledo, Ohio. It was with great foresight and vision that Comfort Line introduced the first fiberglass window ever made nearly 30 years ago.  Recognizing the performance advantages of pultruded fiberglass, Comfort Line leadership took a bold and innovative step to be the first to apply this high quality, high performance material to window frames.

Comfort Line began in 1959 in Toledo, Ohio, and we’ve been leading in the window and door industry ever since.  In addition to the first fiberglass window frame, Comfort Line also introduced the first fiberglass sliding patio door to the US market.  Our patio doors top the list in industry standards with recognition as the Patio Door of the Future, and as a recipient of the Silver Achievement Award. 

Innovation Is Our Guide
Comfort Line continues it’s innovative approach to windows and doors even to this day. 
No other manufacturer offers the breadth of color choices that Comfort Line does.  Our unique process and partnership with industry leader Sherwin Williams, let’s you create the window and door of your color choice by choosing from the expansive Sherwin Williams color palette.

We know that our customers’ homes are their castles, and for this reason we are committed to bring the very best in quality and performance to every window and door we build.