Continental Fan FLM Flexible Insulated Duct - 10" length - 4" Duct

FLM Flexible insulated duct w/metalized vapor barrier is available for 4" to 12" duct and up to 25' in length. UL-181 and ULC S-110 Class 1 Air Duct, wrapped with R4.2 insulation, 2-ply black polyester laminated inner core and an outer jacket made of...