Product details:

Use the Mr. Heater 12' RV Hose with Regulator to hook an existing regulated propane line, found in campers and RVs, to the Big Buddy Heater or the Tough Heater. It's designed to help bring warmth into recreational vehicles. It has been stretch tested to 400 psi and pressure tested to 600 psi, for safety. When the Big Buddy Heater hose is not in use, it can be coiled up for easy storage. It's a beneficial item for camping in cool climates.