Used to adjust airflow to balance system by introducing ambient air.
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Item #

Diameter

Ends

Length (L)

No. of Slots

Gauge

Weight (Galv)

Certifications

Manufacturer

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N/A 16" N/A QF N/A 11" N/A 8 N/A 20 N/A 10.00 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 17" N/A QF N/A 11" N/A 8 N/A 20 N/A 11.75 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 18" N/A QF N/A 11" N/A 9 N/A 20 N/A 13.50 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 20" N/A QF N/A 11" N/A 10 N/A 20 N/A 15.00 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 22" N/A QF N/A 11" N/A 11 N/A 20 N/A 18.00 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 24" N/A QF N/A 11" N/A 11 N/A 20 N/A 22.00 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 3" N/A QF N/A 11" N/A 2 N/A 24 N/A 3.75 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 4" N/A QF N/A 11" N/A 2 N/A 22 N/A 4.00 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 5" N/A QF N/A 11" N/A 3 N/A 22 N/A 4.25 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 6" N/A QF N/A 11" N/A 3 N/A 22 N/A 4.50 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 7" N/A QF N/A 11" N/A 4 N/A 22 N/A 4.75 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 8" N/A QF N/A 11" N/A 4 N/A 22 N/A 5.00 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 9" N/A QF N/A 11" N/A 5 N/A 22 N/A 5.25 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 10" N/A QF N/A 11" N/A 5 N/A 22 N/A 5.50 lbs N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 11" N/A QF N/A 11" N/A 5 N/A 22 N/A 5.75 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 12" N/A QF N/A 11" N/A 6 N/A 22 N/A 6.25 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 13" N/A QF N/A 11" N/A 6 N/A 20 N/A 6.75 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 14" N/A QF N/A 11" N/A 7 N/A 20 N/A 7.50 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
N/A 15" N/A QF N/A 11" N/A 7 N/A 20 N/A 8.25 lbs. N/A ISO 9001 & ISO 14001 N/A Nordfab
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