DUCT BALLOON

Inflatable barrier for industrial machinery, namely, inflatable barrier for exhaust stacks, inflatable barrier for a blower cavity intake and exhaust end, inflatable barrier for a structural cavity, inflatable barrier for use in air or fluid cavities

non-metal vent covers for HVAC ducts in the nature of an inflatable barrier; inflatable barrier for forming a partition wall; portable non-metal free-standing inflatable barriers