[Features] · Can be easily installed in tight places. · Also ideal for large entrances. · Seals securely. · A simple mechanism that is easy to handle and that minimizes malfunctioning/breakdowns. · No need for rails, grooves, or steps on the floor. · The opening and closing motion is light and smooth (not affected by the adhesion of dust or other contaminants). · A clean design whereby the cover covers the entire rail. · A left and right dual use type.