Wallace Perimeter Security Cantilever Sliding Gates Cantilever sliding gates provide a security solution for a variety of different applications. Cantilever sliding gates do not rely on any surface mounted rail or track, therefore ease of operation and maintenance is dramatically improved. No ground track also means that the gate can accommodate heavy traffic in continuous duty applications. Modular construction allows for quick, economical delivery and cost effective future serviceability. The rack and pinion drive is quiet, and provides a secure entrance while maximizing the life of the gate. Sealed bearings in the rollers and nylon polyamide rack and pinion gears eliminate the maintenance requirements associated with conventional chain drive operators. Straight forward sizing allows for quick shipping.