DUCT FLEXIBLE UNINSULATED9inx25ft ATCO

500-9 MFG #: 05502509
Flexible Air Duct; Type Class 1, Plain End, Uninsulated; Burning Character Maximum Flame Spread 25, Maximum Smoke Developed 50; Air Velocity 5000 FPM; Rated Positive Pressure 10 Inch WG; Rated Negative Pressure 3/4 Inch WG; Jacket Material Durable Metalized Aluminum Foil and Polyester; Length 25 Foot; Width 9 Inch; Temperature Rating -20 to 180 Deg F; Applicable Standard UL, NFPA 90A and 90B, SBCC, BOCA; Application Supply, Return and Exhaust Duct in Low-to-Medium Pressure Heating, Air Conditioning and Exhaust System
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