10" X 25' R4.2 Flex Duct w/ Raw EndsJohns Manville insulationGREENGUARD® certified insulated productsGalvanized or bronze metal core reinforcingOversized core to fit on collars and register boxesWeather-resistant packagingEasy-to-carry packageHUD /FHA standards 515.2.1, paragraph BNFPA standards 90A and 90BMeets most BOCA, City of Chicago, federal, state and local codes and standardsUL listed/approved to UL 181
