multi-family & commercial

High-performance windows and doors by KULU bring many benefits to your whole-building design.

Commercial fenestration solutions give you the freedom to create beautiful buildings with all of the safety and energy requirements you desire. Our envelopes with large windows offer a minimized energy loss with unmatched thermal performance. Enhanced security and energy efficiency are additional perks. 

Since introducing our first PVC window design more than 60 years ago, our vinyl window and door solutions have increased sustainability on thousands of commercial buildings worldwide.




A very unique product for large openings in both residential and commercial markets.



GENEO® is composed of RAU-FIPRO®, a proprietary fiber composite material .


Cut energy costs with up to 35% better thermal performance than old vinyl windows

35% better energy performance than typical residential windows and glazing capacities of up to 2 inches. KULU windows and doors deliver U-values down to 0.13, far superior to industry standards. 

Climate friendly

uPVC is more climate-friendly than wood and alternative materials. KULU windows and doors contribute to sustainability through superior energy efficiency and longevity. Using abundant resources, efficient manufacturing, and recycled materials makes its manufacturing process efficient. uPVC has an 80 percent lower carbon footprint over its lifespan than aluminum.

Good for your bank account and good for the environment

Avoid more expensive regular upgrading by choosing KULU profiles in your commercial building. As a result, reduce heating and cooling costs, and reduce your carbon footprint.

"KULU windows and doors are a leading choice among advocates for green building practices. Energy-efficient, environmentally friendly and meet LEED and Passive House standards."


Elite design and superior craftsmanship set your build apart. Choose KULU windows and doors to complement any design style and elevate the property’s look. Again, raising property value and tenant satisfaction. 

REHAU combines 60 years of European design excellence with 40 years of American ingenuity to create uPVC window and door systems. The A-list choice for intelligent homeowners and builders. Create a home that reflects your values and looks fantastic. 

Choose from multiple configurations, countless shapes, dazzling colors and textured finishes

Creative freedom is yours, with more than 1,500 design options. Let us know what you want, and we will make it happen. The REHAU experience will not disappoint.

Brilliant colour options complement metal or wood finishes

Choose from a rainbow of exterior and interior finishes in addition to our primary profile colours. We colour match your exact wishes using advanced foiling technology. Natural aluminum finishes replicate your favourite shade of oak or redwood and anything in between.

Custom configurations
and shapes

Offering a full range of window and door configurations, from traditional North American styles such as hung and casement windows and sliding doors to the more modern European types like tilt-turn windows and lift-slide doors. Choose an architectural shape that fits your vision. Creative use of multiple units within one continuous frame makes for stunning views.

Let there be light,
light and more light

Windows and doors help create beautiful spaces. REHAU windows are stunning even without window treatments with modern or traditional lines, sleek hardware, and many colour options. The perfect choice for multi-family units and commercial spaces.


Enjoy decades of indoor comfort behind windows and doors that block sound, drafts and moisture

Comfort and security are KULU’s ultimate mission for its advanced window and door structures. With windows and doors that hold their beauty and lustre for years, optimize daylight and keep you safe from the weather. 

Comfort and security are top priorities. With tight, highly insular windows and doors that help maintain steady indoor temperatures and lower energy costs over the years. It means strong, durable windows impervious to moisture, winds and storms, as well as resisting unwelcome intruders. And it means a more protected building. See below for how KULU windows and doors deliver the best quality. 

Up to 25% less noise, 60% less air infiltration with cutting-edge REHAU doors and window

Noise Blocker

Urban areas with noise pollution are a thing of the past. Our skillfully engineered, multi-chambered window profiles offer high insulating qualities. Suitable for one to three panes glass. They are blocking up to 45 decibels of outside sound, reducing noise pollution by 80%. Now that is impressive.

Air and water barrier

Utility bills stack up with drafty windows. But mould and water damage are even worse. So switch it up with KULU uPVC frames. Solid and leak-proof. The compression-seal technology integrates the structures and sashes to achieve u-Values down to 0.13. The result is a nearly impregnable barrier against all weather extremes that we know will hold up for decades. Our testing proves it.

Security measure

Keep intruders out and small children safe inside. When combined with appropriate hardware, windows and doors from KULU enhance security. Multiple locking points, fusion-welded corners and reinforced, multi-chambered design.