Manufactured with reinforced fabric with high heat silicone coated fiberglass fabric starter section. Duct has excellent resistance to abrasion, flame, grease, and oils. This duct comes with a continuous heavy duty extruded wearstrip to protect from ground abrasion, two 1” wide black web straps with clip buckle attached to secure duct when not in use and attached wire round end rings on both ends. Material conforms to fire resistant standards UL-94V-O. Temperature rating: -65F to 265F.