<strong>Key Features & Benefits</strong> <li>Johns Manville Formaldehyde-free™ fiber glass insulation</li> <li>GREENGUARD® certified insulated products</li> <li>Galvanized fine gauge wire metal core reinforcing</li> <li>Oversized core to fit on collars and register boxes</li> <li>Weather-resistant packaging</li> <li>Easy-to-carry package: Up to 10″ bags are strapped to form a pair</li> <li>Available in boxes and bags</li> <li>Available in 25 ft lengths</li> <li>HUD /FHA standards 515.2.1, paragraph B</li> <li>NFPA standards 90A and 90B</li> <li>Meets most BOCA, City of Chicago, federal, state and local codes and standards</li> <li>UL listed/approved to UL 181</li>
<strong>Core</strong> <li>Two layers of polyester film encapsulate a galvanized or bronze coated wire helix</li> <li>A high tensile galvanized fine gauge wire is used in the core to provide additional strength</li> <li>Rated positive pressure is 10″ W.C. and negative pressure is 1/2″ W.C. per the UL 181 standard – Rated maximum air velocity is 6000 FPM</li>
<strong>Configurations</strong> <li>Diameters available: 6″, 8″, 10-18″</li> <li>Lengths available: 25 ft</li>
<strong>Approvals</strong> <li>ETL Listed/Approved to UL 181 Standard</li> <li>NFPA standards 90A and 90B</li> <li>HUD/FHA standards 515.2.1 Paragraph B</li> <li>Meets most federal, state and local codes and standards</li> <li>GREENGUARD certified entire duct construction</li>
<strong>Fiberglass</strong> <li>R4.2, R6.0 and R8.0 certified by UL and the Air Diffusion Council using ASTM C-518 at installed thickness of insulation</li> <li>Made of formaldehyde free materials</li>
<strong>Operating temperature range</strong> <li>-20˚F to 180˚F – Continuous</li> <li>-20˚F to 200˚F – Intermittent</li>
<strong>Surface burning characteristics</strong> <li>Flame spread: Less than 25</li> <li>Smoke developed: Less than 50</li> <li>Class 1 rated duct assembly</li>
<strong>Vapor barrier</strong> <li>The Quietflex UV-Inhibited Black Jacket Flex Duct and Manufactured Housing Flex Duct have a UV-Inhibited polyethylene vapor barrier</li> <li>Vapor transmission: 0.11 perms for Black Jacket and 0.07 perms for Manufactured Housing</li>