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Diameter: 4 - 20 inches ID
Pressure Rating: (WG)
Positive: 10 inches (4"-12" ID)
6 inches (14" - 16" ID)
4 inches (18" - 20" ID)
Negative: 1 inch (4"-12" ID)
Velocity: 5000 FPM
Temperature Range: -20° F to 200° F continuous,
-20° F to 250° F intermittent
R Value: R-4.2
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