FS - Free Spring series offer vibration isolation for base mounted that installed on floor or base. These open spring isolators compress on neoprene cups and take in small and substantial frequency vibrations. Inertia bases consist of structural steel channel perimeter body, strengthened steel, equipment mounting templates with anchor bolts https://zandermkgav.blogdon.net/little-known-facts-about-pump-inertia-base-55565062