Systems

A fusion of refined aesthetics and engineered performance, the AA®6400 / 6500 / 6600 Series Thermal Windows deliver exceptional functionality for both new construction and retrofit applications. Designed for high-performance commercial buildings, these systems offer outstanding thermal efficiency, structural integrity, and architectural appeal.

Each model supports insulating glass up to 1-3/4″ (44.5 mm), with high condensation resistance and low U-factors achieved through a polyamide thermal break. Clean 45° mitered corners enhance the visual profile, while operable options and ribbon wall compatibility provide design flexibility across project types.

Performance & Features

– Polyamide thermal break for superior thermal isolation
– Supports 1″ (25 mm) and 1-3/4″ (44.5 mm) insulating glass units
– Excellent U-factors and condensation resistance (I-value)
– 45° mitered corners for a clean, architectural appearance
– Fixed, casement, and projecting window configurations available
– Compatible with continuous ribbon window wall applications
– High structural performance for demanding commercial use
– Designed for AW-rated applications
– Supports LEED certification and sustainable building goals

Model Overview

– AA®6400 4″ (101.6 mm) frame depth
Suitable for standard punched openings and small-scale ribbon window applications

– AA®6500 5″ (127 mm) frame depth
Enhanced thermal and structural performance for mid-scale architectural needs

– AA®6600 6″ (152.4 mm) frame depth
Designed for larger spans, greater load requirements, and continuous ribbon wall designs