UL 181, Class 1 air connector label for general venting. Multiply design of metalized polyester with 1 in pitch steel wire support.

Durable through the wall hood. Fully assembled, riveted tailpipe, backdraft flapper. Standard mouth hood for good airflow.

Includes aluminum preferred hood, length of UL transition duct, 4 in aluminum ring plate and 2 metal tension clamps.

Includes UL transition duct, 2 tension clamps and plastic preferred hood.

Semi-rigid aluminum duct is ideal for applications where building codes require use of all aluminum duct. The duct is totally non-combustible with a maximum operating temperature of 400 deg F.

UL listed. Easy to install, fits in tight places where rigid metal ducting will not work.