The ThermoFlo™ LayFlat Duct Sleeve offers a cost-effective solution for air movement. Crafted from a fire-resistant black polyethylene material, this oversized sleeve is designed to fit easily onto connectors and fans, making it an economical choice for temporary air diffusion needs. Each roll spans 100 feet (30 meters), marked at approximately every foot for quick and convenient installation. Produced in North America under strict quality standards.