Top of the line European-grade dual-pane glass expedition vehicle windows. Quality and durability are unlike any other acrylic window on the market especially in the US. Windows can be vulnerable points with travel, but Armor Vision's innovative design creates high quality security protection due to its flush-mount exterior frame, tempered security glass, steel reinforced frame and dual steel locking points. Unlike Acrylic windows, these windows work with upmost ease: 2 locking positions - vent (provides ventilation air, while maintaining security) and closed (securely seals), single handle operation, variable opening positions, no preset stops, and smooth magnetic closer on integrated insect screen and integrated roller shade. Other added bonuses include: higher insulation (thermal) properties, better noise reduction, higher insulation properties, scratch-proof, easily cleanable, and allows for expansion and contraction with elevation changes. Overall, Armor Vision Windows are sleek, elegant, and strong.