Check the listing for details. High Output AH545 Heater 30,000 BTU Heater 12 Volt Ag Bus Vans Boat Dual Fan. Condition: New. Listed at 248.95 USD. HIGH OUTPUT 30,000 BTU AUXILIARY HEATER - 16 x 6 1/2 x 9 - 12 VOLT 12 VOLT HEATER A LARGE FAN WITH BIG HEAT. HAS DUAL WHEEL BLOWER AND 3 DEFROSTER DUCTS FOR ROUTING AIR FLOW. MAY BE USED FOR HEATING OR DEFROSTING. FEATURES:HOT WATER FORCED AIR HEATHIGH EFFICIENCY ALUMINUM COREALL STEEL, POWDER COATED CASE3 SPEED HIGH VOLUME DUAL WHEEL BLOWER WITH 3 DUCTS LENGTH: 16HEIGHT: 6 1/2OVERALL DEPTH: 9CONNECTIONS: 5/8VOLTAGE: 12VHIGH OUTPUT 30,000 BTU AUXILIARY HEATER - 16 x 6 1/2 x 9 - 12 VOLT 12 VOLT HEATER A LARGE FAN WITH BIG HEAT. HAS DUAL WHEEL BLOWER AND 3 DEFROSTER DUCTS FOR ROUTING AIR FLOW. MAY BE USED FOR HEATING OR DEFROSTING. FEATURES:HOT WATER FORCED AIR HEATHIGH EFFICIENCY ALUMINUM COREALL STEEL, POWDER COATED CASE3 SPEED HIGH VOLUME DUAL WHEEL BLOWER WITH 3 DUCTS LENGTH: 16HEIGHT: 6 1/2OVERALL DEPTH: 9CONNECTIONS: 5/8VOLTAGE: 12V