Clearly GRENS
Why GRENS?
GRENS is a leading window and door manufacturer based in Winnipeg, Manitoba, providing high-quality aluminum solutions for residential, commercial, and architectural needs across Canada. We focus on durability, energy efficiency, and modern design, setting ourselves apart with our commitment to technology and craftsmanship.
By partnering with Reynaers Aluminum, we integrate advanced systems into our production for precision and sustainability. Our dedication to innovation and client satisfaction has made GRENS a trusted choice for architects, builders, and homeowners. Join us in creating a brighter future!



What makes GRENS unique?
Why should people use aluminum windows?

What makes aluminum sustainable?
Aluminum stands out as one of the most sustainable materials used in construction. It can be recycled entirely without compromising its qualities, greatly minimizing waste and conserving natural resources. GRENS prioritizes environmentally friendly methods by using recycled aluminum and adopting energy-efficient manufacturing practices. Additionally, aluminum windows enhance energy efficiency by providing superior thermal insulation, which decreases heating and cooling requirements, supporting worldwide initiatives aimed at reducing carbon emissions footprints.
Factory
GRENS’ manufacturing facility is equipped with state-of-the-art CNC machinery, allowing for the production of high-quality aluminum windows and doors with exceptional precision. The factory fully integrates with ReynaFlow, an advanced software system developed by Reynaers Aluminum, which facilitates seamless workflows from the design phase through to production. With a strong focus on volume efficiency and customization, the GRENS facility can accommodate projects of varying scales while maintaining strict quality standards. Our central location enables rapid distribution across Canada.
