Vibration Isolation Pads are high grade neoprene isolation mediums which can efficiently and economically control structure-born noise and resonant vibration. The most common applications have them placed under machinery, grinders, compressors, metal panel enclosures or other common sources of high intensity noise levels for vibration and shock control. Acoustical Solutions offers four types of Isolation Pads. The standard isolation pad comes in a 2'x 2' x ¼" thick neoprene pad with a 40 PSI (Pound Per Square Inch) rating. The Medium Vibration Isolation Pad is a 18" x 18" x 3/8" thick pad with a 45 PSI rating. The Heavy Duty Vibration Isolation Pad is 18"x 18" x ¾" thick with a 45 PSI rating. The Cork and Rubber Combo Pad is 18" x 18" x 3/4" thick with a 50 PSI rating.