80 Series – Fixed Window

The pinnacle of energy efficiency

NFRC U-Factor 0.213SHGC 0.261VT 0.425
Windows

80 Series – Fixed Window

The 80 Series Fixed Window reaches the apex of thermal innovation with an astonishing U-Factor of 0.213 Btu/(h·ft²·°F). Designed for demanding climates, zero-energy buildings, and eco-conscious architecture, it bathes interiors in brilliant natural light (VT 0.425) while strictly regulating heat transfer (SHGC 0.261)—an uncompromising blend of monumental scale and sustainable engineering.

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Related: 80 Series – Casement Window · 80 Series – Awning Single Window · 127 Series – Slim Casement Window

The Pinnacle of Passive House Design

The 80 Series Fixed Window represents the zenith of our thermal engineering capabilities. Designed to meet and exceed the rigorous demands of next-generation eco-villas, zero-energy buildings, and high-performance and Passive House projects. Crafted for architects and uncompromising homeowners, it proves that a building’s envelope is its most critical asset. By pushing the boundaries of structural glass and aluminum manufacturing, we have created a static fenestration solution that radically redefines modern energy efficiency.

Unrivaled Insulation Parameters

The performance data of the 80 Series Fixed Window speaks volumes. It is engineered with exceptionally wide thermal breaks designed to accommodate the thickest, most advanced glazing packages available in the architectural market.

Maximizing Natural Luminance Without Compromise

One of the most significant challenges in high-performance window design is maintaining visual clarity—adding thick thermal layers often darkens the glass. The 80 Series Fixed Window shatters this compromise entirely. Despite a heavy-duty, multi-cavity triple-glazing system, it achieves a remarkably high Visible Transmittance (VT) of 0.425, flooding spaces with pure, color-neutral sunlight and heavily reducing the need for artificial lighting.

Engineering a Seamless Envelope

The structural framework is built around an ultra-wide, thermally broken aluminum profile—strictly necessary to accommodate the immense thickness and weight of high-performance glazing. Yet, through clever architectural design, the visible exterior sightlines remain sleek and thoroughly modern. As a fixed unit, the continuous perimeter sealing is designed to limit drafts and support acoustic dampening. Structural ratings must be confirmed for each project size and wind-load requirement.

Elevating Premium Architecture

Choosing the 80 Series Fixed Window is a definitive statement of architectural intent—a commitment to supreme comfort and ecological responsibility. It is the ultimate solution for vast living rooms requiring expanses of glass without the heavy penalty of energy loss.

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