The SentryGuard™ cantilever gate (U.S. Patent #7,739,834) helps prevent falls off loadings docks and shipping pits. Gate lifts up and out of the way in seconds, so it doesn’t obstruct floor traffic. Gas-assist struts make lifting the gate almost effortless. Installation is simple, a small footprint and (6) concrete anchor bolts are all that’s required. SentryGuard is perfect for preventing falls when dock doors are open for ventilation too. Sizes for 4-foot to 24-foot openings.