Inline Fiberglass Ltd. is the only fully integrated fiberglass window and door manufacturer in Canada. As a result, we have the distinct advantage of controlling all aspects of design, production and quality. Beginning with the manufacturing of lineals using the pultrusion process, painting, to design and final assembly of windows and doors, our experienced team has gained the industry reputation for producing the best fiberglass windows and doors in the market place. In addition, we have the largest offering of fiberglass window and door types and combinations.

Inline only manufactures high performing windows and doors that are extremely durable, energy efficient and outperform all other window types. By cutting-edge technologies and innovations, Inline is able to provide superb energy efficiency, sustainability and affordability. Inline is driven to produce the most effective products to reduce energy consumption in both residential and commercial buildings.

Inline Fiberglass was founded over 35 years ago by Stanley Rokicki and a team of dedicated engineers and technicians whose research led to the commercialization of fiberglass window frames. Being true to its roots, Inline is still a family business dedicated to manufacturing beautiful, high-performance windows and doors.

Owned In: Ontario

Made In Toronto, ON:

Fiberglass Windows:

  • Tilt n Turn
  • Awning / Outside
  • Casement / Outside
  • Picture
  • Strip Window
  • Casement / Hopper
  • Horizontal Slider
  • Single Hung
  • Double Hung
  • Bay / Bow
  • Custom

Fiberglass Doors

  • Tilt n Turn
  • Patio Doors

Inline Fiberglass Availability:

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Opening Hours


8:30 am - 5:00 pm


8:30 am - 5:00 pm


8:30 am - 5:00 pm


8:30 am - 5:00 pm


8:30 am - 5:00 pm


10:00 am - 2:00 pm