Class 1 HVAC Air Duct - 25' x 4", 5000 FPM, R8

840120 MFG #: MHP25R8B04
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Guaranteed Out of Package Lengths; Greenguard Gold Certification; Formaldehyde Free; 3/8 Inch Oversize Inner Core; Certified R-Values
HVAC Air Duct; Type Class 1; Insulation Type R-8; Burning Character Maximum Flame Spread 25, Maximum Smoke Developed 50; Air Velocity 5000 FPM; Rated Positive Pressure 6 Inch WG; Rated Negative Pressure 1 Inch WG; Jacket Material 2-Ply Reinforced Metalized Polyester; Core Material 2-Ply Black Pigmented Polyester; Length 25 Foot; Width 4 Inch; Temperature Rating 0 to 200 Deg F; Applicable Standard ASTM E96A-94, UL, HARDI; Thermal Value R4.2/R6/R8; Inner Core 3/8 Inch; End Treatment Raw Ended