| http://www.w3.org/ns/prov#value | - The system comprises a least one hollow carrier suitable for receiving and retaining a rigid material such as foamed polyurethane, epoxy, thermoplastic, ceramic, metallic, metallic foam, concrete, or other material which may provide structural reinforcement, noise and vibration damping, sealing, stress-strain reduction, or other desired physical characteristics to the structural member, as well as
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