| http://www.w3.org/ns/prov#value | - Vapor curtain 32 is made of flexible material capable of being folded for storage, and may be delivered to structure 15 for the initial installation in panel sections much the same as boom 24 and curtain 28, and then assembled together using suitable attachment methods and materials such as heat seaming, sewing, bonding with adhesives and suitable combinations thereof.The material of vapor curtain
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