Linear OSCO VS-GSLG Slide Gate Opener Linear OSCO VS-GSLG is a Commercial Slide Gate Operator. This gate operator is a Variable Speed operator. The OSCO VS-GSLG variable speed operator starts and stops at a slower speed, which is less stressful on the operator and gate and saves wear and tear on the components. This operation may add a few seconds to the opening speed but is well worth the extra time in avoiding the sudden jerking of the operator at the start and slamming of the gate at the stop. Linear OSCO is one of the nation's foremost manufacturers of commercial and residential gate and door operating systems, Linear OSCO provides quality automatic openers for the fencing, parking, ornamental iron and garage door industries.