• Footprint is 18-3/4" long x 14-1/4" wide for a well-balanced fit
• A built-in, backdraft damper and bird screen provide a dependable roof cap you can count on
• Roof cap is made of 24 gauge CRCQ steel construction with a black electrically-bonded epoxy finish for durability and long life.
• Designed to fit with 3-1/4" x 10" or up to 8" round duct for flexible installation
• For use with range hoods, LoSone fans and bath ventilation fans.