Inline Fiberglass Windows and Doors

Inline Fiberglass is renowned as the most experienced manufacturer of high performance fiberglass windows and doors. Inline carries the largest all fiberglass product lines along with the greatest variety of glass, colors and other options. We oversee every step of manufacturing from the pultruding of the frames to the finished product. This allows us to provide the highest level of quality and ensure the smallest carbon footprint in the industry.

Inline Fiberglass is also a world leader in the development, design and application of fiberglass pultrusion technology. Inline's leading product, thin walled fiberglass lineals are used in a myriad of applications. As a fully integrated manufacturing operation, Inline designs and pultrudes in-house standard and custom lineals.

PULTRUDED FIBERGLASS IS AN EXTRAORDINARY MATERIAL WITH SUPERIOR PERFORMANCE CHARACTERISTICS WITH THE FOLLOWING RECOGNIZED MATERIAL ADVANTAGES:

STRENGTH – A well engineered FG window delivers vastly superior strength characteristics when compared to other windows like PVC FG provides 8 times greater sheer strength when compared to PVC.

LOW MAINTENANCE – FG is the most stable material which provides an ideal base for a full range of finishes, ensuring an unbelievably durable window. This material is so tough that it will withstand extremes from Arctic cold to blazing desert heat to the rugged seacoast!

CONDUCTIVITY – FG combines strength with very low levels of conductivity, without adding thermal breaks. FG is an amazing 500 times less conductive than aluminum and FG frames and sash are also less conductive than vinyl due to reduced mass. Utilizing fiberglass in home construction promotes energy efficiency and results in long-term energy cost savings.

ENVIRONMENTALLY FRIENDLY – FG not only features the lowest embodied energy (low energy consumption in lineal production) when compared to other common window frame materials while providing and the longest life expectancy. This has led experts to recognize FG as the most environmentally friendly system.

NON-CORRODING – FG material is used in boats and bridge structures which face punishing loads and stresses as well as corrosive materials such as salt water. FG window frames provide superior life and durability to vinyl and aluminum in corrosive/coastal environments.

Visit The Inline Fiberglass Windows and Doors Website


• Tilt n' Turn
• Patio Doors
• Sliding Doors