Inline Fiberglass

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What we do



Inline Fiberglass is the world leader in the development, design and application of High Performance Energy Efficient Windows. Inline is the world’s largest all fiberglass window manufacturer with the largest line of products. Inline offers unparalleled value with high quality construction for both the residential and commercial market. The story of Inline is more than a business success story. It is a shining example of a business that operates by integrity, values and forward thinking that remain at the core of the company's very existence.

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.

With its headquarters and main production facilities located in Toronto, Canada, Inline profiles, windows, doors and production equipment are sold around the world. Inline Fiberglass conducts rigorous testing at its own state-of-the-art facility to ensure the highest quality, performance, energy efficiency and compliance to various standards and specifications.

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Our Commitment to Excellence



Inline Fiberglass is proud to partner with industry-leading organizations to promote energy efficiency and sustainable design.





Lunch and Learn Seminars
Contact: info@inlinefiberglass.com



Customer Reviews





News                



Inline remains Top of the Class

10 April, 2014

For the fourth consecutive year, Inline Fiberglass Ltd is proud to announce that it has once again made Window and Doors Magazine Top 100 Manufacturers List. Again, Inline remained the only all fiberglass manufacturer to make this exclusive list of manufacturers. This prestigious designation is awarded to only the biggest and best manufacturers of fenestration products.


Inline Featured in DWM Magazine

3 April, 2014

In the latest release of Door and Window Magazine(DWM), Inline is featured in an in depth article. This article gives readers a sense of who we are, what we do and where we are heading. The article can be found on page 33 & 34. If you are looking for a real insight of Inline, please click here: www.dwmmag.com/digital/2014/mar2014.pdf


Inline Premieres at Fensterbau

20 February, 2014

For the first time, Inline Fiberglass will be displaying at Fensterbau. Fensterbau which is held in Nuremberg Germany March 26-29, 2014 is the largest window and door show in Europe. Held every second year, it is consider the most important show for new releases, products and hardware. In conjunction with two of its partners, Inline will be displaying a variety of different products.
For more information, please contact us directly or visit www.frontale.de/en/


Inline Wins DWM Magazine Green Award

16 October, 2013

Toronto—Door and Window Market Magazine (DWM), the leading trade publication serving the door and window industry, announced that Inline Fiberglass has been named one of its 2013 Green Award Winners. Inline will be profiled in the magazine’s October issue.
The company was chosen by the magazine’s editors for committing to produce highly efficient Energy Star fiberglass windows. Read More