The 200 series is made in the USA with durable aluminum construction and powder coated for extra protection against marine environments. When you need reliable equipment for your boating needs, trust HeaterCraft. Heater Kit Includes: One Heater Unit with wire 6' harness One High/Low switch 3" Vent hose (6 ft per vent) One 3" fixed euro vent One Hot Tube Gen 1 Universal mounting brackets & screws 40 feet of heater hose One low idle "Y" 2 Brass Fittings with clamps Technical Specifications: 12 Volt 28,000 BTU 12 V Amperage: Three speed blower Low 4.4, Med 5.8, High 8.5 Air flow: Low 230 cfm, Med 248 cfm, High 260 cfm. Hose barb: 5/8"