Dundas Jafine Aluminum Semi-Rigid Dryer Duct, 4 in. x 8 ft. is designed for use in gas or dryer applications where an all-aluminum duct is required by code. This durable, non-combustible duct can withstand a maximum operating temperature of 435 degrees Fahrenheit, ensuring safety and reliability during operation. Its continuous lock seam construction allows the duct to be easily pulled open, compressed, bent, and re-bent without causing leaks, making installation and adjustments simple and efficient. Measuring 4 inches in diameter and 8 feet in length, this semi-rigid dryer duct the balance of flexibility and sturdiness for your venting needs.