4″ x 25′ UL 181 Class 1 Air Connector
Flexible aluminum\aluminum foil duct is ideal for applications where building codes require use of all aluminum duct. The duct has a maximum operating temperature of 250°F.
- UL 181 Class 1 listed and labeled
- Laminated foil design for easier installation
(1) – 4″ x 25′ UL 181 Class 1 Air Connector