Kinetics Model FLS vibration isolators consist of free-standing, large diameter, laterally stable steel springs assembled into welded steel housing assemblies fabricated to limit vertical movement of the isolated equipment if equipment loads are reduced, or if the equipment is subjected to large external forces. The housings also provide a constant free and operating height to facilitate installation. To assure stability, the springs have lateral spring stiffness greater than 1.2 times the rated vertical stiffness and are designed to provide a minimum of 50% overload capacity. FLS Springs are available with deflections to 4″ (102 mm) and with load capacities to 23,200 lbs. (10,524 kg) as standard products.