Fantech FIDT 4 - Insulated Flex Duct 4"
The Fantech FIDT 4 Flexible Duct is an energy-efficient solution for ventilation systems. It is UL 181 listed.
The Fantech FIDT 4 is a flexible round insulated duct offers greater thermal efficiency to save energy. It is covered with a high-quality silver jacket to offer durable use. This 4-inch insulated duct is UL 181 listed.