The ceramic fiber material adopted in smoke exhaust duct solutions is specially engineered via unique processes. It is a dedicated fire-resistant wool for smoke control & exhaust ducts with superior fire resistance performance. During installation, simply fasten the fire-resistant wool onto metal sheet ducts with special metal fasteners, apply fire-resistant sealant to all joints, then seal the seams with aluminum foil adhesive tape.During installation, simply fasten the fire-resistant wool onto metal sheet ducts with special metal fasteners, apply fire-resistant sealant to all joints, then seal the seams with aluminum foil adhesive tape.