FRPU
window
Pultruded FRP fiberglass window with polyurethane resin matrix. No steel liner, excellent thermal insulation, salt‑corrosion & weather resistance. Fit for passive house, coastal and high‑rise projects, customizable casement & sliding styles.。
The GFRPU hung window represents a new standard in energy-efficient fenestration, combining the classic double-hung vertical sliding operation with advanced composite material technology. Designed for both residential and light commercial projects, this window offers dual operable sashes, allowing you to control ventilation from the top or bottom—a feature especially valued in traditional architecture and modern sustainable homes alike.
Manufactured using pultruded Fiberglass-Reinforced Polyurethane (GFRPU) profiles, this hung window delivers exceptional structural integrity without the need for internal steel reinforcement. The material provides a natural resistance to thermal bridging, as the GFRPU profiles have a thermal expansion coefficient closely matching that of concrete. This minimizes deformation and stress on the window frame during temperature fluctuations, ensuring long-term dimensional stability.
The zero thermal bridge design is a cornerstone of this product. Unlike aluminum or vinyl windows that often require separate thermal breaks, the GFRPU profiles inherently prevent heat transfer. Combined with optional Low-E or insulated glass, the hung window achieves outstanding thermal insulation, making it an ideal choice for passive houses, energy-efficient villas, and commercial buildings in cold or hot climates.
Built to withstand harsh coastal environments, the GFRPU hung window offers exceptional salt-spray resistance and corrosion resistance, setting it apart from traditional materials that may rust or degrade over time. The UV-aging resistance ensures the window maintains its color and structural integrity even under prolonged sun exposure. This makes it a preferred solution for beachfront villas, seaside resorts, and chemical plants where exposure to moisture and corrosive elements is high.
The dual operable sashes move smoothly within the frame, allowing for natural ventilation control. The tilt-in feature is a standout convenience: each sash can be tilted inward toward the interior for easy cleaning from inside the building. This eliminates the need for exterior access ladders or costly window washing services, reducing maintenance costs for homeowners and facility managers.
As a professional manufacturer specializing in GFRPU profiles and window systems, we offer comprehensive OEM and ODM services. Customizations include:
Stringent quality control is applied throughout the entire production process, from raw material sourcing to final assembly. This ensures each hung window meets rigorous standards for performance, safety, and longevity. Our products are exported to North America, Southeast Asia, Europe, Oceania, and other global markets, trusted by window distributors, contractors, and construction partners worldwide.
Invest in the GFRPU hung window to elevate your building's energy efficiency, durability, and comfort. Whether you are a contractor seeking reliable fenestration for a coastal villa or a homeowner looking for a classic, low-maintenance window solution, this product delivers exceptional value.
FRP (Fiber-Reinforced Plastic) windows are made by using glass fibers and resin-based materials that are formed through pultrusion; no steel reinforcement is required. They can be designed as sliding windows, windows that open inward, push-open windows, and lift-and-slide doors. These represent a high-performance new type of window and door system suitable for buildings with ultra-low energy consumption, passive houses, areas with extreme cold conditions, and high-rise buildings.
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