About Us Orders & Requests Products & Lab Services Training Jobs Downloads Contact Us News	Flame Retardant Products Flexible Insulated Ducting Black Jacket U.L. 181 & c U.L. 181 CLASS 1 AIR DUCT Ideal for use in general ventilation applications including heating, air conditioning, intake and exhaust. Helps reduce heat and cool loss and condensation build-up. Polyester Core - Black Polyethylene Jacket R4.2 INSULATION R6.0 INSULATION R8.0 INSULATION Sitemap Marshall Plastic Film 904 East Allegan P.O. Box 125 Martin, Michigan 49070 Phone: (269) 672-5511 Toll Free: (800) 410-8597 Fax: (269) 672-5035		By Application Automotive • Autoclave • Biodegradable • Liquid Storage/Transport • Pharmaceutical • VCI • Flame Retardant • Construction • Industrial Packaging • Shrinkwrap •