30 in Duct Dia, Polyester, 30 in W, 25 ft L

The Air Ventilator Large Diameter hose is an air ventilation duct designed to move large volumes of air. This flexible duct comes in large sizes that were previously unavailable off the shelf, including 30-, 36-, 42-, and 48-inch diameters, all in 25-foot long coils. Each duct has a belted cuffed end for easy installation, reducing the need for clamps and makes installing ventilation pipes a quick and painless task. These ducts are ideal for large commercial ventilation systems that require quick and easy field installation. This large bore flexible hose is made from PVC vinyl coated polyester fabric hose that is reinforced with a spring steel wire helix. Due to its PVC construction, the flex duct is resistant to weathering, chemical rotting, corrosion, and abrasion. This flexible duct walls high tensile strength prevents it from being easily fissured or warped under normal pressures. PVC flex ducts are the preferred choice for many long-life and outdoor installations. Under NFPA 701, the PVC coated duct fabric is tested by burning a small sample and measuring the flame, the char length and flame residue. If a ducting material meets the NFPA 701 standards in these three areas, the flexible duct is considered flame retardant and receives a NFPA 701 certification. In institutional or military applications, air conditioner hose or ventilation duct hose are generally required to carry flame retardant qualities. In these cases the inventoried Air Ventilator Large Diameter Yellow will offer a quick and easy access to a portable air conditioner hose or a large air vent duct for industry. Although this is large diameter flex ducting, it is made with an external wearstrip. The extra layer of protection is an added PVC coated fabric that is an auxiliary layer applied to the areas the metal helix is constructed around. Though perhaps too large to be dragged and moved continuously, these large ducts will be moved during installation and perhaps moved again when the temporary ventilation installation is closed. The additional layer of protection will add life to the hose and keep it from accidental damage.

• Extra large diameter ducts in 30-, 36-, 42-, and 48-Inch diameters
• Highly compressible with a 9-to-1 compression ratio
• Belted cuffed end for easy installation
• Tested and meets NFPA 701-2023 flame propagation requirements
• Wearstrip offers external abrasion resistance