Specification Sheet

Broan-NuTone LLC, A Nortek Company, Hartford, Wisconsin 53027
Model 643
•
.025 Aluminum - natural finish
•
Built-in backdraft damper
•
For 8" round duct
Model 613
•
High capacity
•
Built-in backdraft damper and bird screen
•
.025 Aluminum natural finish
•
For 12" round duct
Model 441
•
Gravity dampers
•
Collar with bird screen for attaching 10" round duct
•
24 GA CRCQ steel construction with aluminum louvers
Model 646
•
Polymeric construction, white finish
•
For 6" round duct
Model 645
•
Polymeric construction, white finish
•
For 3" round duct
Model 450 Flexible Wall Ducting Kit
•
Includes 5 ft. of 4" flexible ducting, 4" diameter metal duct
connector, 2 duct clamps, 4" to 3" reducer and a polymeric
louvered wall vent