Our screens are manufactured with our exclusive, patented "Slow-Close" Speed Reducer. This hydraulically controlled device slows the screen return into the housing, assuring frail or small hands are not caught in the screen as it closes. It provides for a smooth retraction that prevents tearing of the material and abrasion of parts. The ClearView Retractable Screen Systems is the only brand offering a proven "Slow-Close" speed reduction system. Others have tried to imitate it, but none have matched ClearView's superior quality and innovative design.