Master Flow F6IFD4X300 Insulated Flexible Duct, 4 in, 25 ft L, Fiberglass, Silver [SKU: ORG8628638]

Two-ply continuous inner core products, smooth interior for more efficient air movement, Vapor barrier, durable and scuff-resistant jacket, Zinc-coated, high-carbon steel wire helix, Thick, continuous blanket of glass fiber insulation, Metalized single-strand fiberglass yarns for added strength and tear-resistance. [QTY/UOM: 1EA / 1EA]