Rubber-Cal 01-191-4"Air Ventilator Orange" Ventilation Duct Hose, 4"ID x 25' Length Hose Fully Stretched Product in stock for shipment within 24 hours in 4, 6, 8, 10, 12, 14, 16, 18, and 24-inch IDs Lightweight and versatile duct hose with spring steel wire helix to provide extra reinforcement Super compressibility with an impressive 10:1 ratio, allowing for easy storage and transport Active working temperature range of -20 to 160 degrees, perfect for air conditioning or heating Wear-strip offers abrasion resistance to ensure the duct hose can stand up to external wear