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Noise Insulation Metal Perforated Insulation Hangers Attachment In Marine Engine Description details of noise insulation metal perforated insulation hangers The metal base is available with a ready-to-use a perforated base to be bonded with suitable adhesive. A self-locking washer (clip or dome) is applied over the protruding spindle to retain the insulation. we can customize their own crown as per specifications. For their special needs, they can check out the specialized