Vibro Acoustics FS-SA-75, 1" (25mm) Deflection FS, Free Spring Floor Mounted Isolators, 75 lbs rated load, Grey-Orange, 1 inch deflection at rated load, 2.5 lbs isolator weight. Free standing, laterally stable, unhoused spring type isolator with levelling nuts to position and secure the equipment. Minimum 50% additional travel to solid. Minimum kx/ky ratio of 0.8, All elements safe at solid loading. All hardware zinc-plated, Grade 2 minimum. All springs powder coated. Operating height shown is maximum recommended height.