The 24 in. L x 4 in. D Duct Connector allows you to connect 2 ducts with ease. This connector offers a 24 in. length and a 4 in. diameter for ideal use. It is constructed of 30 gauge aluminum for strength and durability and can be used in a variety of settings. The connector has a minimum temperature of 32 degrees Fahrenheit and a maximum temperature of 284 degrees.