This complete tube heater consists of one 125,000 BTU natural gas burner control box, four 10-foot tube sections, stainless steel couplers, and chrome-plated hanging brackets (included with each tube section). Mr. Heater® products are designed for professionals that require tough, durable heaters for heavy-duty commercial, construction, and retail applications. The heater delivers highly efficient, radiant-style heat designed for many applications, including new construction, warehouses, manufacturing buildings, pole barns, and automotive repair bays. The burner boxes come ready for natural gas, and include propane conversion kits. All components are name-brand and non-proprietary.