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Ultra High Speed, High Security and Take one look at the Spiral® FV® (Full View) door in action and it makes an immediate impression. With an ultra-high opening speed of up to 100 inches per second, it’s extremely fast. Yet for all that speed, its unique Spiral® technology keeps it whisper-quiet. And its top-to-bottom full-width window slats provide a full view for an extra measure of safety at the threshold. Not to mention, a sharp, high-tech look. All of which promote an enviable image of cutting-edge operations.