Broan Nu-Tone 641 Wall Cap; For 6 Inch Round Duct, 22 Gauge CRCQ Steel

Detailed Description: Broan Nu-Tone Wall cap is made of 22 ga CRCQ steel construction with a 0.025 natural aluminum finish for durability and long life. It is designed to use with 6-Inch round duct and provided with a spring-loaded back draft damper, bird screen to keep nests and small animals on the outside. It features built-in back draft damper and bird screen that helps to keep out unwanted outside air and critters.