Product HighlightsMHP flexible duct is constructed with a spring steel wire helix, encapsulated in a 2-ply, air tight inner-core. Fiberglass (Choice of R4.2, R6, R8) insulation encompasses the core and a unique metalized, reinforced vapor barrier surrounds the entire duct.
- UL listed and labeled
- Guaranteed out of package lengths
- 10 year limited warranty
- GREENGUARD Children & Schools Certification
- Formaldehyde free
- 3/8" oversize inner core
- Certified R-Values
- Reduces Flex Duct scrap & waste by 12%
California residents: see Proposition 65 Warning
Weight 35.00 Pounds Length 30.00 Inches Width 20.00 Inches Height 20.00 Inches Country of Origin USA Brand JP Lamborn R-Value R4.2 Jacket Material 2 Ply Reinforced Metalized Polyester Vapor Transmission 0.01 US Perms Application Flexible Ducting Certifications UL-181 Color Silver Composition Polyester Film, Wire, & Insulation Core Material 2-Ply Polyester Fire Rating CLASS 1 AIR DUCT Inside Diameter 20" Insulated Yes Maximum Air Flow 5,000 FPM Maximum Pressure 4" W.G. Maximum Temperature 200°F (93.3°C) Operating Temperature 0°F to 200°F (-17.7°C to 93.3°C) Pressure Rating Max Positive: 4" W.G & Max Negative: 1/2" W.G. Size 20" x 25' Warranty Offered Yes Compliance UL 181, NFPA 90A & 90B, UMC & IMC UL Listed Yes UL Recognized Yes
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