Camco 20-Foot Durable HTS RV Standard Sewer Hose is perfect for an occasional RVer. This sewer hose is built using 12 mils of black HTS vinyl with a 3-inch opening. The hose compresses to 27 ½-inches for storage. RV Standard hose is 12 mils of black HTS vinyl RV Standard hose is 12 mils of black HTS vinyl 20-foot hose Compresses to 27 ½-inches for storage Contains more wire and vinyl than other standard sewer hoses